Answer is Option (2) for SSC MTS Biology MCQ

Plant genetic material in ‘GENE BANK’ is preserved at -196° Celsius in Liquid Nitrogen as mature seed (dry). In plants, it is possible to unfreeze the material and propagate it.

GenBank is built and distributed by the National Center for Biotechnology Information (NCBI), a division of the National Library of Medicine (NLM), located on the campus of the US National Institutes of Health (NIH) in Bethesda, MD, USA. The database started in 1982 by Walter Goad and Los Alamos National Laboratory.

Plant genetic material in a gene bank is stored in the form of seeds, cuttings, and other reproductive materials. These materials are collected from plants and stored to preserve the genetic diversity of crop species.

Why is plant genetic material preserved in a gene bank?

• To preserve crop diversity
• To help farmers find varieties that will thrive under their conditions
• To prepare crops to cope with climate emergencies
• To support the search for particular traits
• To contribute to global food security and sustainable agriculture

Answer is Option (3) for SSC MTS Biology MCQ

Flowers emit fragrance to attract pollinators which are mainly insects. The fragrance plays a prominent role in the localization and selection of flowers by insects, especially moth-pollinated flowers, which are detected and visited at night.

How do flowers attract pollinators?

• Scent: Flowers emit a scent that attracts pollinators like insects and birds.
• Color: Flowers have brightly colored petals to attract pollinators.
• Shape: Flowers have a shape that attracts pollinators.
• Time of day: Flowers emit the most fragrance when pollinators are active. For example, plants pollinated by bees emit the most scent during the day, while plants pollinated by moths emit the most scent at night.

Answer is Option (1) for SSC MTS Biology MCQ

Vitamin C (Ascorbic acid) cures scurvy, which can cause abnormal gum bleeding. Excellent sources include citrus fruits such as oranges, lemons, limes, and grapefruits.

How vitamin C prevents scurvy

• Vitamin C is a cofactor that helps stabilize collagen types I and VI.
• It’s required for the hydroxylation of proline residues on procollagen, which is necessary for the triple-helix formation of mature collagen.
• Vitamin C deficiency can lead to fragile skin and blood vessels, gingival hemorrhages, petechiae, and impaired wound healing.

Other roles of vitamin C

• Vitamin C is also involved in immune system support, iron absorption, and cholesterol metabolism.
• It’s a potent antioxidant that protects cells from oxidative stress.

Answer is Option (1) for SSC MTS Biology Question

Robert Harding Whittaker was a distinguished American plant ecologist who was the first to propose the five-kingdom taxonomic classification of the world’s biota into the Animalia, Plantae, Fungi, Protista, and Monera in 1969. He also proposed the Whittaker Biome Classification, which categorized biome-types upon two abiotic factors: temperature and precipitation.

Answer is Option (1) for SSC MTS Biology MCQ

Chitin is the main component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulas of mollusks, and the beaks and internal shells of cephalopods, including squid and octopuses. Combined with calcium carbonate, as in the shells of Crustacean and mollusks, chitin produces a much stronger composite.

Answer is Option (4) for SSC MTS Biology Question

Heart rate refers to the speed of the heartbeat, specifically the number of heartbeats per unit of time. The heart rate is typically expressed as beats per minute (bpm). The normal human heart rate ranges from 60–100 bpm; however 70-80 bpm is treated as the normal in adults.

Answer is Option (3) for SSC MTS Biology MCQ

Taenia is a genus of tapeworm that includes some important parasites of livestock. Members of the genus are responsible for taeniasis and cysticercosis in humans. There are more than 100 species recorded. They are morphologically characterized by a ribbon-like body composed of a series of segments called proglottids.

Answer is Option (3) for SSC MTS Biology Question

A scavenger is an organism that mostly consumes decaying biomass, such as meat or rotting plant material. Blue-green algae (BGA) inhibit lipid peroxidation and have free radical scavenging activity, which can be beneficial for the protection against oxidative stress.

Answer is Option (2) for SSC MTS Biology MCQ

Ossification is the process of laying down new bone material by cells called osteoblasts. It is synonymous with bone tissue formation. As per scientific evidence, by the age of 25 years nearly all bones are completely ossified in humans. Ossification test is a guess work based on the fusion of joints in the human body b/w birth and age 25. If all joints are fused the person must be of 25yrs of age or older.

Answer is Option (1) for SSC MTS Biology Question

Living beings are systems or organisms that tend to respond to changes in their environment and inside themselves, in such a way as to promote their own continuation and longevity. They have the ability to breathe or respire, move or navigate and the ability to multiply. Living organisms include human beings, plants, insects, animals among others.

Answer is Option (4) for SSC MTS Biology MCQ

Myopia, commonly known as nearsightedness, is a vision condition in which close objects are seen clearly, but objects farther away appear blurred. It occurs if the eyeball is too long or the cornea, the clear front cover of the eye, has too much curvature. Concave lenses or corrective surgery is used to correct this defect.

Causes 

• The shape of your eye causes light rays to bend before reaching the retina

Treatment 

• Eyeglasses or contact lenses can help you see more clearly
• Refractive surgery, such as LASIK, can also correct myopia

Risk factors 

• Myopia often begins in childhood and adolescence
• Children are more likely to develop myopia if their parents are nearsighted
• Myopia is becoming more common, especially in children

Answer is Option (2) for SSC MTS Biology MCQ

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and trophic levels to which they belong—dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.

Answer is Option (1) for SSC MTS Biology MCQ

Feed cost is one of the important variable costs that plays a big role in determining the poultry cost. Variable costs rise and fall with the size of the output and the level of the operation. Fixed costs (for items such as taxes, insurance, interest, and depreciation on buildings and equipment), are incurred whether or not there is any output.

Answer is Option (2) for SSC MTS Biology Question

Ascorbic acid is a naturally occurring organic compound with antioxidant properties which is one form of Vitamin C. It dissolves well in water to give mildly acidic solutions. It is used to prevent and treat scurvy, a disease caused by a lack of vitamin C in the body.

Benefits

• Immunity: Vitamin C helps the body fight colds and the flu. 
• Collagen production: Vitamin C helps the body produce collagen, which helps wounds heal and keeps skin looking young. 
• Heart health: Vitamin C may help lower blood pressure by relaxing blood vessels. 
• Antioxidant: Vitamin C protects cells from damage caused by free radicals, which can lead to inflammation and chronic diseases. 
• Iron absorption: Vitamin C helps the body absorb iron. 
• Eye health: Vitamin C may help lower the risk of cataracts and slow the progression of age-related macular degeneration. 

Vitamin C deficiency

People with low vitamin C levels may have slower wound healing. Healthcare professionals may recommend supplements for people with low vitamin C levels. 

Vitamin C sources

Vitamin C is an essential nutrient that the body cannot produce on its own. It can be obtained from food or supplements. Vitamin C is found in many fruits and vegetables, including citrus fruits, berries, peppers, and leafy greens.

Answer is Option (3) for SSC MTS Biology MCQ

A modified stem is a part of a plant with special features developed for special functions. Modified stems can be found either above or below ground. Examples of above the ground modified stems include; crowns, stolons, runners or spurs, while below the ground include; bulbs, corms, rhizomes, tubers and tendrils. Sweet potato is an example of a tuberous root.

Answer is Option (4) for SSC MTS Biology Question

The clitellum is a thickened glandular and nonsegmented section of the body wall near the head in earthworms and leeches, that secretes a viscid sac in which the eggs are deposited. Its main function is to store the eggs of the earthworm.

Answer is Option (4) for SSC MTS Biology MCQ

Glucose (C₆H₁₂O₆), also called dextrose, is one of a group of carbohydrates known as simple sugars (monosaccharides). It is found in fruits and honey and is the major free sugar circulating in the blood of higher animals. It is the most important source of energy for cellular respiration. Glucose is stored as a polymer, in plants as starch and in animals as glycogen.

Answer is Option (1) for SSC MTS Biology MCQ

The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water. The organisms that carry out photosynthesis include the plant life of the land areas as well as the phytoplankton of the oceans.

 6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

Answer is Option (3) for SSC MTS Biology Question

Xylem parenchyma is the only living component found in xylem tissue. They are living cells associated with the xylem that are found in between the vessels and the fibers. They act as storage house of starch and fat with assisting in conduction of water. Xylem is a complex permanent tissue specialized for the conduction of water and mineral substances in plants.

Answer is Option (1) for SSC MTS Biology MCQ

Insectivorous plants trap insects because they grow in a soil which is deficient in nitrogen (such as acidic bogs and rock outcrops). The insects they feed on help them in fulfilling their nitrogen needs. Venus flytrap, pitcher plant, utricularia, drosera and Rafflesia are the examples of insectivorous plant.

Answer is Option (1) for SSC MTS Biology MCQ

Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.

Answer is Option (1) for SSC MTS Biology MCQ

Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.

Answer is Option (3) for SSC MTS Biology Question

Natural rubber is harvested mainly in the form of the latex from the rubber tree. The latex is a sticky, milky colloid drawn off by making incisions in the bark and collecting the fluid in vessels in a process called “tapping”. The latex then is refined into rubber ready for commercial processing.

Answer is Option (4) for SSC MTS Biology MCQ

Swine influenza, also called pig influenza, swine flu, hog flu and pig flu, is an infection caused by any one of several types of swine influenza viruses. Swine flu, also known as the H1N1 virus, is a relatively new strain of an influenza virus that causes symptoms similar to the regular flu. It originated in pigs, but is spread primarily from person to person.

Answer is Option (2) for SSC MTS Biology MCQ

Typically, both male and female mosquitoes feed on nectar and plant juices, but in many species the mouthparts of the females are adapted for piercing the skin of animal hosts and sucking their blood as ectoparasites.

In many species, the female needs to obtain nutrients from a blood meal before she can produce eggs, whereas in many other species, she can produce more eggs after a blood meal. Both plant materials and blood are useful sources of energy in the form of sugars, and blood also supplies more concentrated nutrients, such as lipids, but the most important function of blood meals is to obtain proteins as materials for egg production.

For females to risk their lives on blood sucking while males abstain is not a strategy limited to the mosquitoes; it also occurs in some other insect families, such as the Tabanidae.

Answer is Option (3) for SSC MTS Biology MCQ

Ultrasound is a technique that uses sound waves to show a picture of a baby (fetus) in the uterus. It works by bouncing sound waves off the developing fetus. Echoes from the waves are analyzed by computer to produce a moving or still picture, called a sonogram, on a screen. The technique is also called sonography.

Answer is Option (1) for SSC MTS Biology Question

The hollow space of the middle ear has also been called the tympanic cavity. It is an irregular, laterally compressed space within the temporal bone. It is filled with air, which is conveyed to it from the nasal part of the pharynx through the auditory tube. The middle ear contains three tiny bones known as the ossicles: malleus, incus, and stapes.

Answer is Option (4) for SSC MTS Biology MCQ

Blood plasma is the straw-colored/pale-yellow liquid component of blood that normally holds the blood cells in whole blood in suspension. It makes up about 55% of total blood volume. It is mostly water (93% by volume), and contains dissolved proteins, glucose, clotting factors, electrolytes, hormones and carbon dioxide (plasma being the main medium for excretory product transportation).

Answer is Option (3) for SSC MTS Biology Question

Na+/K+-ATPase (also known as sodium-potassium pump) is an enzyme located in the plasma membrane of virtually every human cell and is common to all cellular life. In nerve and muscle cells the membranes are electrically excitable, which means that they can change their membrane potential, and this is the basis of the nerve impulse. The sodium and potassium channels in these cells are voltage-gated, which means that they can open and close depending on the voltage across the membrane.

Answer is Option (3) for SSC MTS Biology MCQ

Green leafy vegetables are rich in iron as well as calcium. For example, Spinach is a dark, leafy green vegetable which is high in iron. One cup of cooked spinach provides one with 6.5 mg of iron which is an essential mineral needed by the human body and is a component of many proteins, including hemoglobin, which helps red blood cells deliver oxygen to all areas of the body.

Answer is Option (3) for Biology MCQ for SSC MTS

Poliomyelitis, often called polio or infantile paralysis, is an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.

Answer is Option (3) for SSC MTS Biology MCQ

A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart’s native pacemaker is not fast enough, or there is a block in the heart’s electrical conduction system.

Answer is Option (3) for SSC MTS Biology Question

Landfill is the most common and the oldest method for waste disposal management, incineration is the second largest method for waste disposal management in most of the countries around the world.

Answer is Option (4) for Biology MCQ SSC MTS

Scorpions are predatory arthropod animals which are easily recognized by the pair of grasping claws and the narrow, segmented tail, often carried in a characteristic forward curve over the back, ending with a venomous stinger. All known scorpion species possess venom and use it primarily to kill or paralyze their prey. This venom is present in their stings.

Answer is Option (2) for SSC MTS Biology MCQ

A typical adult human skeleton consists of 206 bones. These include: 22 Cranial and Facial Bones; 6 Ear Bones; 1 Throat Bone; 4 Shoulder Bones; 25 Chest Bones; 26 Vertebral Bones; 6 Arm and Forearm bones; 54 Hand Bones; 2 Pelvic Bones; 8 Leg Bones; and 52 Foot Bones.

Answer is Option (1) for SSC MTS Biology Question

Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. Sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose in presence of an enzyme called invertase.

Answer is Option (4) for Biology MCQ for SSC MTS

Earthworms have no eyes, but they do have light receptors and can tell when they are in the dark, or in the light.

Earthworms improve soil structure, increase nutrient availability, and improve drainage. These benefits help plants grow and support farm productivity. 

How earthworms improve soil structure

• Loosen and aerate soil – Earthworms burrow tunnels that loosen and aerate soil, which helps plant roots grow. 
• Improve drainage  – Earthworms improve drainage by loosening compact soil, allowing water to drain away. 

How earthworms increase nutrient availability 

• Recycle organic material: Earthworms eat dead roots, leaves, grasses, and manure, and their casts are richer in nutrients than the surrounding soil.
• Unlock nutrients in dead organisms: Earthworms unlock nutrients held within dead organisms and plant matter.

How earthworms improve farm productivity 

• Improve soil structure: Earthworms improve soil structure, which helps plants grow.
• Improve nutrient availability: Earthworms increase nutrient availability, which helps plants grow.
• Improve drainage: Earthworms improve drainage, which helps plants grow.

Answer is Option (3) for Biology MCQ SSC MTS

Acupuncture is an alternative medicine methodology originating in ancient China that treats patients by manipulating thin, solid needles that have been inserted into acupuncture points in the skin. According to Traditional Chinese medicine, stimulating these points can correct imbalances in the flow of qi through channels known as meridians.

Answer is Option (2) for SSC MTS Biology MCQ

DNA is an informational molecule encoding the genetic instructions Along with RNA and proteins, it is one of the three major macromolecules that are essential for all known forms of life. Genetic information is encoded as a sequence of nucleotides (guanine, adenine, thymine, and cytosine) recorded using the letters G, A, T, and C.

Answer is Option (3) for SSC MTS Biology MCQ

Totally submerged plants are the true water plants or hydrophytes. Because they are truly aquatic they have the greatest number of adaptations to life in water. Air-filled cavities often extend throughout the leaves and stems of aquatic plants, providing an internal atmosphere.

Answer is Option (1) for SSC MTS Biology Question

Amoebiasis refers to infection caused by the amoeba Entamoeba histolytica. Amoebiasis is estimated to cause 70,000 deaths per year worldwide. Symptoms can range from mild diarrhea to dysentery with blood and mucus in the stool. E. histolytica is usually a commensal organism.

Answer is Option (2) for Biology MCQ SSC MTS

Bacteria play a great role in nitrogen fixation. Nitrogen fixing bacteria inhabit legume root nodules. Nitrogenase is the enzyme in nitrogen-fixing bacteria that catalyzes the conversion of atmospheric nitrogen into ammonia.

Answer is Option (4) for Biology MCQ for SSC MTS

The inheritance of acquired characteristics is a hypothesis that physiological changes acquired over the life of an organism (such as the enlargement of a muscle through repeated use) may be transmitted to offspring. It is also commonly referred to as the theory of adaptation equated with the evolutionary theory of French naturalist Jean-Baptiste Lamarck.

Answer is Option (1) for SSC MTS Biology MCQ

Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega-3 fatty acids and Vitamin D. Cod liver oil contains about 150% of the daily value (DV) of vitamin A and 56% of the DV of vitamin D.

Benefits

1. Fish liver oil is a nutritional supplement derived from the liver of cod fish

2. Cod liver oil is one of the best sources of omega 3 fatty acids (EPA and DHA)

Answer is Option (3) for SSC MTS Biology Question

Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).

Answer is Option (4) for Biology MCQ SSC MTS . Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.

Answer is Option (4) for Biology MCQ for SSC MTS

A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.

Answer is Option (3) for SSC MTS Biology MCQ

Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (AIDS). Mumps (epidemic parotitis) is a viral disease of the human species, caused by the mumps virus. Poliomyelitis is an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.

Answer is Option (2) for SSC MTS Biology Question

Trypsin is a serine protease found in the digestive system of many vertebrates, where it hydrolyses proteins. Trypsin in the duodenum catalyses the hydrolysis of peptide bonds so that proteins can be broken down into smaller peptides. These peptides may then be further hydrolyzed into amino acids by other proteases before they enter the blood stream.

Answer is Option (1) for Biology MCQ SSC MTS

Anaemia is a condition in which the number of red blood cells or their oxygen-carrying capacity is insufficient to meet physiologic needs, which vary by age, sex, altitude, smoking, and pregnancy status. Iron deficiency is thought to be the most common cause of anaemia globally.

Answer is Option (4) for SSC MTS Biology MCQ

Interferons are proteins which render the cells less susceptible to attack by viruses. Interferons are proteins made and released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites or tumor cells.

Answer is Option (2) for SSC MTS Biology MCQ

Hemophilia is a group of hereditary genetic disorders that impair the body’s ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the ‘Royal Disease,’ Queen Victoria of England had this disease. However, it can occur in any family as a result of genetic mutation or a change in the genetic code.

Answer is Option (4) for SSC MTS Biology Question

Chlorophyll is an extremely important bio-molecule, critical in photosynthesis, which allows plants to absorb energy from light. Chlorophyll absorbs light most strongly in the blue portion of the electromagnetic spectrum, followed by the red portion. However, it is a poor absorber of green and near-green portions of the spectrum, hence the green color of chlorophyll containing tissues.

Answer is Option (1) for Biology MCQ SSC MTS

Rhizobia are soil bacteria that fix nitrogen (diazotrophs) after becoming established inside root nodules of legumes. Rhizobia require a plant host; they cannot independently fix nitrogen. In general, they are Gram-negative, motile, non-sporulating rods.

Answer is Option (4) for Biology MCQ for SSC MTS

Hydrogenation – to treat with hydrogen – is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. The largest scale application of hydrogenation is for the processing of vegetable oils (fats to give margarine and related spreads and shortenings). Typical vegetable oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds).

Answer is Option (4) for SSC MTS Biology Question

Biogas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material, and crops. Biogas comprises primarily methane (CH₄) and carbon dioxide (CO₂) and may have small amounts of hydrogen sulphide (H₂S), moisture and siloxanes.

Answer is Option (2) for SSC MTS Biology MCQ

Aspartame is an artificial, non-saccharide sweetener used as a sugar substitute in some foods and beverages. It is a methyl ester of the aspartic acid/phenylalanine dipeptide. Under strongly acidic or alkaline conditions, aspartame may generate methanol by hydrolysis. Under more severe conditions, the peptide bonds are also hydrolyzed, resulting in the free amino acids.

Answer is Option (3) for Biology MCQ SSC MTS

Saliva: secreted by the salivary glands; Sweat: achieved by the water-rich secretion of the eccrine glands; Epinephrine: also known as adrenaline is a hormone and a neurotransmitter; and Bile: a bitter tasting, dark green to yellowish brown fluid, produced by the liver that aids the process of digestion of lipids in the small intestine. Bile is the odd one among all four as it is secreted by liver, while others are secreted by glands.

Answer is Option (4) for Biology MCQ for SSC MTS

Viruses do not contain enzymes for energy production or protein synthesis. For a virus to multiply, it must invade a host cell and direct the host’s metabolic machinery to produce viral enzymes, viral proteins, and copies of its nucleic acid, using the host cell’s ATP to power the reactions.

Answer is Option (3) for SSC MTS Biology MCQ

Organic fertilizers like compost are either soil conditioners or growth enhancers. They sustain crop yields and soil productivity in intensive cropping systems which leave low organic residues on the soil.

Answer is Option (2) for SSC MTS Biology Question

Decay is an essential life process, which helps to digest food and recycle materials. Bacteria and fungi are the main groups of decomposer. They release enzymes to break down compounds, so that they can absorb the nutrients. Organisms that feed on dead material in this way are called saprophytes.

Answer is Option (3) for Biology MCQ SSC MTS

Metabolism is the sum total of chemical reactions occurring in cells. It includes both anabolism, the synthesis of the biomolecules (e.g., protein synthesis, DNA replication, glucose synthesis in plants) and catabolism, the degradation of molecules usually for the production of energy (e.g., glycolysis, Krebs Cycle). Metabolism is carried out by specific enzymes which catalyze each step of a long series of reactions.

Answer is Option (3) for Biology MCQ for SSC MTS

Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen gas in solution than cool water. For example, water that is 90° F can only hold 7.4 mg/L DO at saturation, whereas water that is 45° F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.

Answer is Option (3) for SSC MTS Biology MCQ

Unlike in multi-cellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.

Answer is Option (1) for SSC MTS Biology Question

Calorific value refers to calories or thermal units contained in one unit of a substance and released when the substance is burned. Fats have higher calorific value than other food items. The calorific value of different food items (per 100 gram) are: Butter: 740; Cheese: 310; Sugar: 405; and Apple: 45.

Answer is Option (3) for Biology MCQ SSC MTS

Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain.

Answer is Option (4) for Biology MCQ for SSC MTS

Carotene mostly affects the colour of fat. Since milk is comprised of around 3.5% milk fat, a dairy cow that is grass-fed tends to produce yellow milk, over a dairy cow that is not grass-fed and fed primarily a mix of hay, silage and grain.

Answer is Option (2) for SSC MTS Biology MCQ

Diphtheria is an acute an upper respiratory tract illness and infectious disease caused by the bacteria Corynebacterium diphtheriae. It is spread by direct physical contact or breathing the aerosolized secretions of infected individuals.

Answer is Option (2) for SSC MTS Biology Question

Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.

Answer is Option (4) for Biology MCQ SSC MTS

Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.

Answer is Option (2) for Biology MCQ for SSC MTS

Loss of all leaves lead to maximum harm as the tree loses its ability to perform photosynthesis so necessary for food manufacturing. Besides, loss of its bark will also be dangerous as it is the only part of a tree that is really alive. There is thin layer of cells right under the bark. If the bark is gone that layer dries out and dies.

Answer is Option (3) for SSC MTS Biology MCQ

Vitamin E is a powerful antioxidant that helps improve circulation. Apart from sexual desire itself, circulation is the most important component of sexual function. Good bodily circulation is mandatory for a good sex life. A deficiency in vitamin E can cause anemia, or a low red blood cell count, which affects your body’s ability to produce sex hormones that promote reproductive system function.

Answer is Option (4) for SSC MTS Biology MCQ

Female birds in most families have only one functional ovary (the left one), connected to an oviduct although two ovaries are present in the embryonic stage of each female bird.

Answer is Option (2) for SSC MTS Biology Question

Alfalfa is a small seeded crop, and has a slowly growing seedling, but after several months of establishment, forms a tough ‘crown’ at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.

Answer is Option (1) for Biology MCQ SSC MTS

Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person’s life.

Answer is Option (3) for Biology MCQ for SSC MTS

Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.

Answer is Option (1) for SSC MTS Biology MCQ

The air we breathe in contains about 0.04% carbon dioxide. The air we breathe out contains about 4% carbon dioxide. In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.

Answer is Option (1) for SSC MTS Biology MCQ

Adrenaline directly affects, regulates and determines the body’s ability to maintain a healthy blood pressure. When the adrenal gland becomes damaged or contains tumors, an excess of adrenaline greatly increases blood pressure levels, causing severe headaches, weight loss and other serious problems.

Answer is Option (3) for SSC MTS Biology Question

There are three bones in each human ear. The small ear bones are arranged in series, and are known as ossicles. Ear bones are the malleus, or hammer, the incus, or anvil, and the stapes, or stirrup. Together they form a short chain that crosses the middle ear and transmits vibrations caused by sound waves from the eardrum membrane to the liquid of the inner ear.

Answer is Option (2) for SSC MTS Biology MCQ

Bread is usually made from wheat-flour dough that is cultured with yeast, allowed to rise, and finally baked in an oven. The fermentation due to yeast makes the bread soft and spongy.

Answer is Option (3) for SSC MTS Biology Question

A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.

Answer is Option (3) for Biology MCQ SSC MTS

The Ostrich is the largest living species of bird. They usually weigh from 63 to 145 kilograms. Although it cannot fly, the ostrich is also the fastest-running bird today; it can run up to about 70 kilometres in an hour.

 Answer is Option (4) for Biology MCQ for SSC MTS

We have two ears basically to widen the scope of hearing so that we can find out where sounds are coming from, and from what distance; i.e., sound localization. The brain utilizes subtle differences in intensity, spectral, and timing cues to allow us to localize sound sources

Answer is Option (3) for SSC MTS Biology Pervious year Question

In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the “sunshine vitamin”).Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.

Answer is Option (2) for SSC MTS Biology MCQ

The stomach is a muscular, hollow, dilated part of the digestion system which functions as an important organ of the digestive tract in some animals, including vertebrates. It secretes protein-digesting enzymes called protease and strong acids to aid in food digestion.

Answer is Option (4) for SSC MTS Biology Question

If someone belongs to the blood group B, he has B antigens on the surface of his red blood cells and A antibodies in his blood plasma. So he can donate blood to persons of B and AB blood groups, but cannot receive blood from persons having B or O groups.

Answer is Option (3) for Biology MCQ SSC MTS

The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.

Answer is Option (3) for SSC MTS Biology MCQ

On industrial scale, ethanol can be prepared by the fermentation of molasses. Molasses is the mother liquor left after the crystallization of sugarcane juice. It is a dark colored viscous liquid. Molasses contains about 60% fermentable sugar.

Answer is Option (1) for SSC MTS Biology Previous Year Question

Fish as a community comprise the largest group on the earth as 72 percent of the worlds surface is covered with water. Fish are found from equatorial to polar climates; in salty or freshwater sources. It is assumed that life on the Earth began from fish.

Answer is Option (3) for ssc mts biology objective question

The anther contains microsporangia. Each microsporangium contains pollen mother cells. These undergo meiosis, and produce pollen grains, which contain the male gametes (sperm). The pollen is released by the opening of the anther.

Answer is Option (3) for Biology MCQ for SSC MTS

Pineapple is a perennial monocotyledonous plant having a terminal inflorescence and a terminal multiple fruit. The vegetative meristem produces leaves which becomes and inflorescence meristem. The Pineapple inflorescence contains many small flowers. Each flower has a prominent Bract. The Inflorescence Meristem which produces the Secondary Floral Meristem can revert to a Vegetative Meristem and can produce Leaves instead of Bracts. This forms the “crown” of the Pineapple and can be used to grow a new plant.

Answer is Option (4) for SSC MTS Biology MCQ

The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.

Answer is Option (1) for ssc mts biology objective questions

A fibrous root system (sometimes also called adventitious root system) is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Grass, bamboo, banana, rice, wheat, and most of the plants with monocotyledons have fibrous root system.

Answer is Option (4) for SSC MTS Biology Question

If a person belongs to the blood group AB, he has both A and B antigens on the surface of his red blood cells and no A or B antibodies at all in his blood plasma. So he can donate blood to those having AB blood group; but can receive blood from AB, A, B, and O groups.

Answer is Option (1) for SSC MTS Biology Previous Year Question

Femur is the strongest bone of the body which is bone of the leg situated between the pelvis and knee in humans. It is the longest, heaviest and the strongest bone. It is the only bone in the thigh.

Answer is Option (3) for ssc mts biology objective question

Red Blood Cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages. Each circulation takes about 20 seconds. Approximately a quarter of the cells in the human body are red blood cells. They are the most common type of blood cell and the vertebrate organism’s principal means of delivering oxygen (O₂) to the body tissues via the blood flow through the circulatory system.

Answer is Option (3) for Biology MCQ for SSC MTS

Each cell in the body contains 23 pairs of chromosomes. One chromosome from each pair is inherited from mother and one is inherited from father. The chromosomes contain the genes we inherit from our parents. There may be different forms of the same gene called alleles.

Answer is Option (4) for SSC MTS Biology MCQ

Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.

Answer is Option (2) for SSC MTS Biology Question

Haemoglobin is an iron-containing protein in red blood cells. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e. the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.

Answer is Option (3) for ssc mts biology objective questions

Acute kidney failure (AKF) occurs when there is a sudden reduction in kidney function that results in nitrogenous wastes accumulating in the blood (azotemia). The accumulation of nitrogenous wastes is known as uremia. If untreated, uremia can cause coma and eventually death.