InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1301. |
Question : AGMARK is used to certify ………………….. and…………………… products on India. |
| Answer» SOLUTION :LIVE STOCK, AGRICULTURAL PRODUCTS | |
| 1302. |
Question : How long did the illness last? |
| Answer» SOLUTION : Cough and COLD USUALLY last for 5 to 6 days.Fever if CAUSED DUE to cough or cold alsolasts for the same period. | |
| 1303. |
Question : Against which disease BCG vaccine is given ? |
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| 1304. |
Question : How is the small intestine designed to absorb digested food ? |
| Answer» Solution :SMALL INTESTINE comprises three parts - DUODENUM, jejunum and ileum. Ileum is the longest part of the small intestine. If contains minute finger like projections called villi where absorption of food takes place. They are approximately 4 million in number. Internally, each villus contains FINE blood capillaries and lacteal tubes. | |
| 1305. |
Question : After which structure the phylum Echinodermata has been named ? |
| Answer» SOLUTION :SPINY SKIN is the STRUCTURE after which Echinodermata has been named. | |
| 1306. |
Question : How is soil formed? |
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Answer» Solution :Soil is formed by breaking down of rocks at or near the surface of the Earth through various physical, chemical, and biological processes by various factors such as the sun, water, wind and living organisms. (i) Sun: During day time, the rocks are heated. This CAUSES the rocks to expand. During night time, these rocks cool down and contract. Since all parts of the rock do not undergo expansion and contraction at the same rate, this causes the formation of cracks in these rocks. These cracks lead to the breaking up of huge rocks into smaller pieces. (ii) Water: Water catalyses the process of formation of soil in TWO ways. (a) Water goes into the cracks and crevices formed in the rocks. When this water freezes, its volume increases. As a result, the size of the cracks also increases. This helps in the weathering of rocks. (b) Running water wears away hard rocks over long periods of time. Water moving in fast speed carries big and small particles of rock downstream. These rocks rub against each other, resulting in breaking down of rocks. These smaller particles are carried away by running water and deposited down its path. (iii) Wind: Strong winds carry away rocks, which causes rubbing of rocks. This results in the breaking down of rocks into smaller and smaller particles. (IV) Living organisms: Some living organisms like lichens help in the formation of soil. Lichens also GROW on rocks. During their growth, lichens release certain substances, which cause the rock surface to powder down forming a THIN layer of soil. On this thin layer of soil, some small plants like moss also grow. They further cause the breaking down of the rock particles |
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| 1307. |
Question : Afterrecovering from infection of ringworm, Reena throught that all fungi are harmful for human kind, as these spoil food and cause various diseases. But her elder sister told him that not all fungi are harmful, some are quite useful such as in making bread, vitamins, medicines (antibiotics) and in decomposing organic wastes (i) Name any fungus which is used in bread making (ii) Name any fungus which is the source of some medicine What ecological benefit is shown by fungi ? |
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Answer» (ii) Green mould (PENICILLIUM) (III) Fungi are decomposers (or micro-consumers) of ecosystem. They bring about decomposition of DEAD organic matter of any ecosytem and help in RETURNING of minerl elements again to the medium and thus keep running the biogeochemical CYCLES of ecosystems. |
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| 1308. |
Question : Aestivation is an adaptation to overcome cold condition. |
| Answer» SOLUTION :CORRECT statement: AESTIVATION is an adaptation to overcome HOT and DRY condition. | |
| 1309. |
Question :How is our atmosphere different from the atmospheres on Venus and Mars? |
| Answer» Solution :Earth’s atmosphere is different from those of Venus and Mars. This difference lies essentially in their compositions. Earth’s atmosphere is a mixture of nitrogen `(79%)`, oxygen `(20%)`, and a small fraction of CARBON dioxide, water VAPOURS and other gases. This makes the existence of LIFE possible on Earth. However, the atmospheres on Venus and Mars MAINLY consist of carbon dioxide. The AMOUNT of carbon dioxide on these planets can range from `95% "to" 97%.` | |
| 1310. |
Question : Aerenchyma is found in ______ |
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Answer» epiphytes |
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| 1311. |
Question : How is manuare formed? |
| Answer» SOLUTION :MANURE is FORMED by the docompositio of animal excreta and plant waste. | |
| 1312. |
Question : Adventitious fibrous root system is present in: |
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Answer» DICOT PLANTS |
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| 1313. |
Question : How is healthy cattle identified? |
| Answer» Solution :Healthy ANIMALS FEDS REGULARLY ad SHOWS normal posture. | |
| 1314. |
Question : Aditya added 1-2 drops of iodine to three test tubes A, B and C, containing 2 ml of food samples. A dark blue-black colour appeared in test tubes A and B. The correct order of food samples taken in test tubes A, B and C is : (a) rice, dal, potato(b) rice, potato, dal (c ) potato, dal, rice(d) dal, rice, potato |
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| 1315. |
Question : How is genetically modified crop produced ? Explain. |
| Answer» Solution :Selection and hybridization methodsinvolve the whole genomes of PLANTS. Latest RECOMBINANT DNA TECHNOLOGY or genetic engineering involves transfer of one or more genes (i.e. DNA FRAGMENTS) from one plant to ANOTHER. The plant in which foreign gene has been introduced in calledgenetically modified plant. | |
| 1316. |
Question : Addition of oil in pickles prevents the contact of air with the pickle . |
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| 1317. |
Question : Acute disease and Chronic disease |
Answer» SOLUTION :
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| 1318. |
Question : How is green maure made? |
| Answer» Solution :Green MANURE is made by mulching the SUNN hemp by PLOUGHING into the soil, before sowing the CROP seeds. | |
| 1319. |
Question : Acne are cause by |
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Answer» `H_(1)N_(1)` VIRUS |
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| 1320. |
Question : How is genetically modified crop produced? |
| Answer» Solution :GENETICALLY modifed crops are prodced by intoducing a GENE that would provide the DESIRED characteristic into the cell. | |
| 1321. |
Question : According to Binomial nomenclature, which name of an organism cannot be repeated for the nomenclature of any other organism? |
| Answer» Solution :Generic | |
| 1322. |
Question : How is fish yield increased using modern techniques? |
| Answer» SOLUTION :Yield of fish is INCREASED by locating large SCHOOL of fish in open sea USING SATELLITES and echo sounding apparatus. | |
| 1323. |
Question : Accordigng to the maturity duration, which is the economical variety? |
| Answer» SOLUTION :The shorter the DURATION of the CROP from sowing to HARVESTING, the more ECONOMICAL is the variety. | |
| 1324. |
Question : How does water reach the tree top through the xylem naturally? |
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| 1325. |
Question :Absorption of water by plant roots is an example of .......... (diffusion, osmosis, endocytosis) |
| Answer» SOLUTION :OSMOSIS | |
| 1327. |
Question : How does the cork act as as protective tissue ? |
| Answer» Solution :The outer protective layer or bark of a tree is known as the cork. It is MADE up of dead cells. THEREFORE, it PROTECTS the plant against mechanical INJURY, temperature extremes, etc. It also prevents the loss of WATER by evaporation. | |
| 1329. |
Question : How does the atmosphere act as a blanket? |
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Answer» Solution :The atmosphere acts as a BLANKET by PERFORMING the following functions: (a) It KEEPS the average temperature of the EARTH fairly constant during day time and even during the course of whole year. (b) It prevents a sudden increase in the temperature during day time. (c) It slows down the ESCAPE of heat from the surface of the Earth into outer space during night time. |
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| 1330. |
Question : Absorption of fatty acids and glycerol into lacteals is the example of ……………. |
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| 1331. |
Question : how does microbial contamination occur ? |
| Answer» Solution :Microbial contamination occurs due to the PRESENCE ofpathogens like ESCHERICHIA COIL Salmonella in fruits , Vegetables , and ready to EAT MEAT poultry products . | |
| 1332. |
Question : Absorption of Glucose and saltis the example of ……………. |
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| 1333. |
Question : How does locomotion take place in starfish? |
| Answer» SOLUTION :LOCOMOTION is AFFECTED by TUBE FEET. | |
| 1334. |
Question : About 70-80% of oxygen in the atmospheric air is contributed by…………. |
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| 1335. |
Question : Abacus belongs to the first generation of the computer(ii) ENIAC was used in the American military. |
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Answer» Both the STATEMENTS are CORRECT |
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| 1336. |
Question : How does an Amoeba obtain its food ? |
| Answer» SOLUTION : AMOEBA OBTAINS its food through the process of ENDOCYTOSIS. | |
| 1337. |
Question : A,B and C are living organisms, Identify the group to which they belong on the basis of folllowing features A. Unicelluar, microscopic, eukaryotic and shows loccomotion with the help of pseudopodia. B. Unicellular, microscopic, prokaryotic and has cell wall. C. Multicellular, filmentous, eukaryotic, autotrohphic and aqutic, |
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Answer» B= MONERA C= Algae (Plank kingdom) |
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| 1338. |
Question : How does a bat adapt itself to its habitat? |
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Answer» Solution :Mostly, bats live in caves. Caves provide them protection during the day from most predators and the temperature here is very stable. Apart from caves, bats also live in trees, hollowed LOGS and rock crevices. They are extremely important to humans as they reduce insect population and help to pollinate plants. Bats are active at night. This is a useful ADAPTATION for them, as flight requires a lot of energy during day. Their thin, black wing MEMBRANE (PATAGIUM) may cause excessive HEAT absorption during the day. This may lead to dehydration. |
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| 1339. |
Question : (a)You must have attended marriage ceremonies and seen people eating different food items (served in marriage ceremonies) partially and throwing the unconsumed food as waste. How do you feel ? If concerned, explain why ? (b) What steps can you suggest to ensure food security ? |
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Answer» Solution :(a) With Indian population reaching 1.3 billions by the end of 2018, we will require about 240 million tonnes of grains production every year. In order to produce such an ENORMOUS amout of grains, we need extra land for cultivation which is beyond our scope as it is surely going to create ECOLOGICAL disturbances. Therefore, it is essential to WISELY use the available food resources. (b) We can use following METHODS to ensure food security : • Development of disease resistant, high yielding crop varieties having low maturity durations. • By IMPROVING production management • Crop protection management |
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| 1340. |
Question : How dobryophytic plants differ from pteridophyte plants and other higher plants ? |
| Answer» SOLUTION : Bryophytic PLANTS do not have CONDUCTIVE TISSUE. | |
| 1341. |
Question : (a) Why does the plant cell, placed in a hypotonic solution, not burst ? (b) What happens when a fully turgid plant cell is placed in a hypertonic solution ? Name the phenomenon. |
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Answer» Solution :(a) A plant cell, when placed in a hypotonic solution, receives water by OSMOSIS. It does not BURST because it is SURROUNDED by a rigid cell wall which can withstand the turgor pressure of the turgid cell contents. (b) When a fully turgid plant cell is placed in a hypertonic solution, the CYTOPLASM alongwith plasma membrane shrinks and separates from the cell wall as water flows out from the vacuole of the cell. This phenomenon is CALLED plasmolysis. |
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| 1342. |
Question : How do you differentiate between capture fishing,mariculture and aquaculture? |
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Answer» SOLUTION :1. Capture fishing is catchign the FISH by craft and gear from a NATURAL water body. This is popularly kown as fishing and is the age old practice. 2. AQUACULTURE is the broad term for fish farming. In this method the fish seed, i.e. either fish eggs or fish larvae are reared in artificial ponds till they reach a marketable size. Then the are sacrificed and marketed. This is known as culture fishery. 3. When culturing is done for fishes and shell fishes from estuaries, sea or oceans, it is called MARICULTURE. |
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| 1343. |
Question : (a) why do plants have variously coloured flowers ? Give two reasons. (b) Why do certain flowers emit aroma ? How does aroma of flowers spread in the environment ? (c) In the following examples, name the phenomenon involved when : (i) exchange of gases occur across the respiratiory surface. (ii) aroma spreads in the house when your mother cooks food in the kitchen. |
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Answer» Solution :(a) (i) Plants have flowers to attract insects and other animals for POLLINATION. (ii) The flowers are responsible for SEXUAL REPRODUCTION in plants. (b) Flowers of certain plants emit aroma in the enviroment to attract insects and other animals for pollination. The aroma SPREADS from flowers into the surrounding medium by 'DIFFUSION'. (c) (i) Diffusion(ii) Diffusion |
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| 1344. |
Question : How do substances like CO_(2) and water move in and out of the cell ? Discuss. |
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Answer» Solution :The movement of `CO_(2)` and water OCCURS by DIFFUSION and osmosis respectively. (2) These processes take place due to selectively permeable plasma membrane. (3) During cellular respiration, the CONCENTRATION of `CO_(2)` increases inside the cell. As against this the concentration of `CO_(2)` outside the cell is lesser. (4) When there is such a difference in the concentration of `CO_(2)` inside and outside of the cell, then diffusion takes place. (5) The `CO_(2)` moves from region of higher concentration to region of lower concentration through the plasma membrane of the cell. The cell having higher concentration of `CO_(2)` THUS gives it out by the process of diffusion. (6) In the same way `CO_(2)` enters the cell as the outside of the cell has higher concentration of O, than the inside of the cells. (7) Similarly water also undergoes the process of osmosis. Water passes from region of higher water concentration to the region of lower water concentration through the plasma membrane. However, the osmosis also depends upon the amount of SUBSTANCES dissolved in the water. |
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| 1345. |
Question : (a) Who coined the term 'cell' ? (b) Name three major differences between light microscope and electron microscope. (c) Give important points of modern cell theory. |
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Answer» Solution :(a) Robert Hoole coined the term cell. (b) `{:("Light Microscope","Electron Microscope"),("1. Internal vacuum is not present.","1. Internal vacuum is essential."),("2. It uses glass lenses.","2. It uses electromagnets."),("3. It uses beam of light to illuminate the OBJECT.","3. It uses beam of ELECTRONS instead of light."):}` (c) Modern cell theory postules that (i) All LIVING organisms are composed of cells. (ii) A cell is a mass of protoplasm containing a nucleus and bounded by a cell membrane, and in many cases by a cell wall also. (iii) All cells are basically alike in STRUCTURE and metabolic activities. (iv) The functions of an organism as a whole is the result of the activites and interactions of the constituent cells. (v) All living cells ARISE from the pre-existing cells. |
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| 1346. |
Question : How do storage grain losses occur? |
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Answer» Solution :1. When the GRAINS are stored for later USE, they are affected due to two factors, viz., abiotic factors and biotic factors. 2. Abiotic factors are moisture PRESENT in the grains,humidity of the surrounding AIR, unsuitable temperature, adverse environmental conditions, ETC. 3. Biotic, factors are microbes, fungi, insects, rodents, birds, etc. Mishandling and improper methods of storage by humans also become biotic factor for the loss. |
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| 1347. |
Question : (a) What is the casual organism for swine flu? (b) List any three ways of preventing the spread of air-borne diseases. |
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Answer» Solution :(a) `H_1N_1` is the VIRUS that causes swine flu. (b). Three ways to prevent the spread of air-borne diseases are as follows: (1) Providing living conditions that are not overcrowded. (2) Rooms in which PEOPLE stay should be well-ventilated. (3) Always cover the nose and mouth while sneezing and coughing to prevent the DROPLET infection. |
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| 1348. |
Question : (a) What are the two ways of obtaining fish ? (b) What is the major problem faced in fish farming ? How can it be overcome. |
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Answer» (i) CAPTURE fishery. Fish is caught from NATURAL waters both marine as well as inland (freshwater bodies). (ii) CULTURE fishery. Fish is grown in water bodies through human efforts. The mature fish is harvested. (b) Major problem of fishery (or fish FARMING). It is procurement of pure seeds of high quality fish. This problem has been solved through hypophysation or hormonal treatment of selected fishes in BREEDING hapas. |
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| 1349. |
Question : How doporiferan animala differ from coelenterate animals ? |
Answer» SOLUTION :
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| 1350. |
Question : (a) The umbrella-like white structures are generally availabel in pakckets for sale in vegetanble markets with the onset of winter season. What are these structures called? To which group these belong? (b) Are all such type of structures, which you read in your biology book, edible? Name common edible forms (c) What is its nutrient value? |
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Answer» (b) No ; All species of musrhrooms are not EDIBLE as some of these species are highly poisonous. Garicus compestris isa common edible, mushroom (C) Mshroom are rich in MINERALS,vitaminsetc |
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