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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.
| 2401. |
Question : What is Bee-Keeping? Write any four points for successful Bee-Keeping? |
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Answer» Solution :Bee keeping It is the REARING and management of honey bees for obtaining honey and bees wax. Five points which are important for successful bee keeping. a) Knowledge of the nature and habits of bees. b) Selection of SUITABLE location for keeping the beehives. C) Catching and hiving of swarms (group of bees). d) Management of beehives during DIFFERENT seasons. E) Handling and collection of honey and of beeswax. |
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| 2402. |
Question : What is bagging technique? |
| Answer» Solution :The emasculated FLOWERS or FEMALE flowers in BUD condition, or cross pollinated flowers are covered with a bag made up of butter paper to avoid pollination by FOREIGN pollen grains. It is known as BAGGING. | |
| 2403. |
Question : What is bagging technique ? How is it useful in a plant breeding programme ? |
| Answer» Solution :The covering of bisexual FLOWERS after emasculation is called bagging . This is useful for PREVENTING self -pollination or contamination by unwanted POLLEN GRAINS . | |
| 2404. |
Question : What is baker's yeast ? |
| Answer» SOLUTION :SACCHAROMYCES CEREVISIAE | |
| 2405. |
Question : What is back cross ? |
| Answer» Solution :BLACK cross is a `F_1` hybrid with any one the parental genotypes . The BACK cross is of TWO types, they are dominant back cross and recessive back cross. It INVOLVES the cross between the `F_1` off spring with either of the two PARENTS . | |
| 2407. |
Question : BACTERIOPHAGE |
| Answer» SOLUTION :BACTERIOPHAGE is the VIRUS which INFECTS BACTERIA. | |
| 2408. |
Question : What is autogamy? |
| Answer» Solution :In autogamy, the male and FEMALE gametes are PRODUCED by the same cell or same organism and both the gametes FUSE together to form a ZYGOTE e.g. Actinosphaerium and Paramecium. | |
| 2409. |
Question : What is attitude sickness ? What its causes and symptoms ? How does human body try to altitude sickness ? |
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Answer» Solution :Breathlessness at high attitudes. Cause : Low ATMOSPHERIC PRESSURE at high altitudes due to which body does not get enough oxgen. Symptoms : Nausea, fatigue and heart palpitations. Body adapts by : (a) increasing red blood cell PRODUCTIO (B) decreasing binding affinity of haemoglobin ( c) by increasing BREATHING rate. |
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| 2410. |
Question : What is associated with assisted reproductive method IVF?(A) Ovum in fallopian tube(B) Zygote in fallopian tube(C) Zygote in uterus(D) 16 blastomeres in fallopian tube |
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Answer» OVUM in FALLOPIAN tube |
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| 2411. |
Question : What is atresia? |
| Answer» SOLUTION :It is the DEGENERATION of large number of OVARIAN FOLLICLES. | |
| 2412. |
Question : What is asexual reproduction? Explain encystation and sporulation in Amoeba. |
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Answer» Solution :A sexual reproduction : It is a kind of reproduction where off spring is produced by a single parent with or without the involvement of gamete formation. Encystation : During unfavourable conditions, organisms like Amoeba cover themselves with three layered hard covering or cyst. This is CALLED Encystation. SPORULATION : On return of favourable conditions, it divides by multiple fission WITHIN the cyst and produces many Amoebae. The cyst bursts and SPORES are liberated to DEVELOP into adults. This is called sporulation. |
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| 2413. |
Question : What is as oval opening in the interatrial septum of the foetus called ? |
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Answer» FOSSA ovalis |
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| 2414. |
Question :What is artificial semen donation ? |
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Answer» To transfer sperms of a healthy donor in OVEM kept in test tube. |
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| 2415. |
Question :What is artificial selection ? Do you think it affects the process of natural selection ? How? |
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Answer» SOLUTION :A PROCESS in the breeding of organisms by which the scientist chooses to only those forms having certain desirable characteristics is called artificial selection. =Natural selection is the differential survival and REPRODUCTION of individuals due to differences in phenotype. = In natural selection, the difference in reproductive SUCCESS based on a PARTICULAR trait is driven by natural processes like predators, weather conditions, and environmental constraints. = Artificial selection is imposed by humans on other organisms. = It affects the process of natural selection through change in environmental conditions. |
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| 2416. |
Question : What is artificial hybridisation? By which technique is it achieved? |
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Answer» Solution :Artificial hybridization is crossing DIFFERENT species to combine desirable characters to produce commercially superior varieties. It is ACHIEVED by techniques like : (i) EMASCULATION (ii) BAGGING. |
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| 2417. |
Question : What is arterial blood pressure? |
| Answer» Solution :Lateral pressure EXERTED by the FLOWING blood on the WALL of the ARTERIES is CALLED arterial blood pressure. | |
| 2418. |
Question : What is ART ? Categorize the following ART's based on their applications in male sterility and female sterility. GIFT, AI |
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Answer» Solution :ASSISTED REPRODUCTIVE TECHNOLOGIES or any correct DEFINITION. GIFT-FemaleAI-Male |
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| 2419. |
Question : What is artifical hybridisation? By which technique is it achieved ? |
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Answer» Solution :Artificial Hydridisation : Artificial hydridisation is the major AUSPICIOUS of CROP improvement programme. In this crossing experiments only desired pollen grains are used for pollination and the stigma is protected from CONTAMINATION of unwanted pollen GRAIN. This is achieved by EMASCULATION and bagging techniques. |
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| 2420. |
Question : What is aquaculture ? Give example of an animal that can be multiplied by aquaculture. |
| Answer» Solution :The rearing of aquatic animals or the cultivation of aquatic plants for FOOD is CALLED aquaculture. Fishes, shell-fish and CRUSTACEANS (PRAWNS, crabs, ETC.) are the animals that can be multiplied by aquaculture. | |
| 2421. |
Question : What is aposproy / somatic aposory ? |
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Answer» Solution :(i) Megaspore mother cell undergoes the normal meiosis and four megaspores FORMED gradually disappear. (II) A nucellar becomes activated and develops into a diploid embryo sac. (III) This type of apospory is also SOMATIC apospory. EXAMPLES: Hieracium and Parthenium. |
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| 2422. |
Question : What is apospory ? |
| Answer» SOLUTION :Megaspore mother CELL undergoes the normal meiosis and four megaspores formed gradually disappear . A nucellar cell BECOME activated and develops into a DIPLOID embryo sac. This TYPE of apospory is also called somatic apospory . Examples Hieracium and Parthenium. | |
| 2423. |
Question : What is apomixis and what is its importance ? |
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Answer» Solution :Apomixis is the formation of seeds by asexual processes . Apomixis comprises an ensemble of developmental processes that together alter the reproductive functions in the ovule of flowering plants converting the sexual process to an asexual one . Potential impacts of apomixis are (i) Propagation of HYBRID seed directly by the farmer . Seed from an APOMICTIC hybrid will not lose its genetic make up through sexual crossing and thus will breed true . (ii) TUBER crops are currently vegetatively propagated . e.g Cassava Potato Sweet potato and Yams . This will result in the in elimination or reduction of propagule borne disease substantial increase in germ plasm flow and expansion of potential growing regions . |
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| 2424. |
Question : What is apomixis ? |
| Answer» SOLUTION :PRODUCTION of SEEDS WITHOUT FERTILIZATION. | |
| 2425. |
Question : What is apomixis and what is its importance? |
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Answer» Solution :Apomixis is the production of seeds WITHOUT FERTILIZATION. It is a form of asexual reproduction which mimics sexual reproduction. Hybrid progenty when made to produce seeds by apomixis, will MAINTAIN the characteristics of the hybrid. There will be no segregation of characters as no MEIOTIC division will take place. Seeds produced by this METHOD will be cheap and therfore affordable to the farmers. |
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| 2426. |
Question : What is apiculture? How is it important in our lives? |
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Answer» Solution :Apiculture or bee-keeping is the maintenance of hives of honeybees for the production of honey. It has been an age-old cottage INDUSTRY. Honey is a food of HIGH nutritive value and ALSO finds use in the indigenous systems of medicine. Honeybee also produces beeswax, which finds many uses in industry, such as in the preparation of cosmetics and polishes of various kinds. The increased demand of honey has led to LARGE-scale BEEKEEPING practices. it has become an established income generating industry, whether practised on a small or ana large sacle. |
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| 2427. |
Question : What is apiculture ? How is it important in our lives? |
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Answer» Solution :APICULTURE is the maintenance of hives of honey bees for the production of honey. No BIG amount is to be paid to develop apiculture. There is a good PROFIT in it. Honey and wax both can be obtained by apiculture and honey bee acts as POLLINATOR. |
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| 2428. |
Question : What is antisense technology ? |
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Answer» When apiece of RNA that is complementary insequence is USED to STOP expression of a specific gene. |
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| 2429. |
Question : Define antibody affinity. |
| Answer» Solution :ANTIBODY affinity is the strength of the REACTION between a single ANTIGENIC DETERMINANT and a single combining site on the antibody. | |
| 2430. |
Question : What is another term used for GMO(Genetically Modified Organisms) ? |
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Answer» CYBRID organisms |
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| 2431. |
Question : What is animal breeding ? explain. |
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Answer» Solution :BREEDING of animals is an important aspect of animal husbandry. Animal breeding AIMS at increasing the yield of animals and improving the desirable qualities of the produce. A GROUP of animals related by descent and similar in most CHARACTERS like general appearance, features, size configuration etc. are said to BELONG to a breed. When breeding is between animals of the same breed it is called inbreeding while crosses between different breeds are called outbreeding. 
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| 2432. |
Question : What is angina pectoris? |
| Answer» Solution :Angina pectoris is the pain in the chest CAUSED due to REDUCTION in blood SUPPLY to cardiac muscle. The NARROWED and hardened CORONARY arteries are the main cause for angina pectoris. | |
| 2433. |
Question : What is ancuploidy? Write any four symptoms of Down's syndrome. |
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Answer» Solution :Sometimes the chromatids FAIL to segregate during cell division, resulting in gain or loss of a chromosome. This is called aneuploidy. Down.s SYNDROME : It is the addition of one chromosome 21 or TRISOMY. Symptoms : a. Short statured with small round head. B. Partially open mouth with protruding furrowed tongue. c. Palm is broad with palm crease. d. Physical, psychomotor and mental development is retarded. |
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| 2434. |
Question : What is ANDI ? |
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Answer» Transgenic cow |
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| 2435. |
Question : What is Anaphylaxis? |
| Answer» SOLUTION :ANAPHYLAXIS is the classical immediate hypersensitivity REACTION.It is a sudden,SYSTEMATIC,svere and immediate hypersensitivity reaction occurring as a result of rapid generalized mast-cell degranulation. | |
| 2436. |
Question : What is anaerobic respiration? Explain the mechanism of anaerobic respiration. |
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Answer» Solution :1. Anaerobic respiration : Respiration in the absence of molecular oxygen is called anaerobic respiration. 2. Mechanism of anaerobic respiration : Anaerobic respiration OCCURS in the following three steps : (1) Glycolysis : During glycolysis, glucose is broken down to two molecules of pyruvate, two molecules of `NADH_(2)` and two molecules of ATP along EMP pathway as shown below: `C_(6)H_(12)O_(6) + 2NAD + 2ADP + 2iP rarr 2CH_(3)CO.COOH + 2NADH_(2) + 2ATP` (2) Decarboxylatlon: The pyruvate undergoes decarboxylation to form acetaldehyde. This reaction occurs in the presence of pyruvate decarboxylase enzyme which requires TPP (Thymine pyrophosphate) as coenzyme and `Zn^(++)` as cofactor as shown below : `underset("Pyruvate")(2CH_(3))-CO-COOH overset("Pyruvate decarboxylase")underset("TPP+Zn"^(++))rarr underset("Acetaldehyde")(2CH_(3)CHO)+CO_(2)` (3) Reduction : The acetaldehyde is finally REDUCED to ethyl alcohol by accepting hydrogen atoms from NADH2 produced during glycolysis. This reaction occurs in the presence of the enzyme ethanol dehyd rogenase as shown below : `2CH_(3)CHO+2NADH_(2)overset("Ethanol dehydrogenase")rarr2CH_(3)CHOH-COOH+2NAD` During this process, since ethyl alcohol is produced, as end product, it is used in fermentation INDUSTRIES for the production of alcohol from molasses. It is also used in bakeries. The overall equation of anaerobic respiration can be summarized : `C_(6)H_(12)O_(6) + rarr 2C_(2)H_(5)OH + 2CO_(2) + 2ATP` |
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| 2437. |
Question : What is an obturator ? |
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Answer» Solution :(i) The POLLEN tube TRAVERSING the style enters into the locule of the ovary. (ii) It is guided to the MICROPYLE of the ovule by a structure called obturator. (iii) This may originate form the placenta, Funiculus, Style etc. EXAMPLE: Euphorbiaceae (from Placent) |
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| 2438. |
Question : What is an incomplete ecosystem ? Explain with the help of sultable example. |
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Answer» Solution :Abiotic and biotic components are included in ecosystem. Light, air, water, temperature and moisture are included in abiotic components. While all LIVING ORGANISMS who are alive included in biotic components (FACTORS). The receiving of abiotic or biotic components in absent or limited way keep the ecosystem INCOMPLETE like profundal and Benthic ZONE found in aquatic ecosystem. |
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| 2439. |
Question : What is an idiogram? |
| Answer» Solution :Idiogram is the DIAGRAMMATIC representation of KARYOTYPE of a SPECIES. | |
| 2440. |
Question : What is an explant? |
| Answer» Solution :A plant PART EXCISED from a SPECIFIC LOCATION in a plant to be USED for initiating a culture. | |
| 2441. |
Question : Whatis an exosytem ?Howenergy transformationoccurs in anecosystem ? |
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Answer» SOLUTION :An ecosystem is astructuraland functionalunitof the biospherewhichconsistsof livingorganismsand theirnonlivingenvironments . SUNIS the ultimate source of energy. Organsims exceptplantsandsystemto atotraphicplantsand fromtehdecomposers. Thisunidirectionalflowof energy is knownas energyflow. Organiccompoundslikeas the primaryproducersand they prepareconsumerslike HERBIVORE animla consumethe plant . theseorganicto CARNIVORE and a furtherdeceaseenergyis transferredlevelrecivesand a furtherdecreasein energytakes place.Eachtrophicels.Thisprocessis knowas lawof `10%` |
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| 2442. |
Question : What is an endangered species ? Give an example of an endangered plant, and animal species each ? |
| Answer» SOLUTION :Endangered (ER) : It is facing a high RISK of extinction in the wild in the near future if CONSERVATION measures are not promptly taken. E.g., Red PANDA (AILURUS fulgens), Droseraindica. | |
| 2443. |
Question : What is an ecosystem service ? List any four important ecosystem services provided by the natural ecosystems. Are you in favour or against levying a charge on the service provided by the ecosystem ? |
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Answer» Solution :The products of ecosystem processes are named - as ecosystem services. For example, healthy forest ecosystems purify air and water, mitigate droughts and floods, cycle nutrients, generate fertile soils, provide wildlife habitat, maintain biodiversity, pollinate crops, provide storage site for carbon and also provide aesthetic, cultural and spiritual values. Though value of such services of biodiversity is difficult to determine, it seems reasonable to think that biodiversity should carry a hefty PRICE tag. ROBERT Constanza and his colleagues have very recently tried to put price tags on nature.s life- support services. Researchers have put an average price tag of `US $ 33` trillion a year on these fundamental ecosystems services, which are largely taken for granted because they are FREE. This is nearly TWICE the value of the global GROSS national product GNP which is (US $ 18 trillion). |
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| 2444. |
Question : What is an effect of global warming :- (i) Increased capacity of air to accommodate moisture (ii) Altered wind movement pattern (iii) Increased frequency of extreme events (flood, drought, etc.) (iv) Altered range of disease, vectors, pathogens, etc. |
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Answer» (i) only |
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| 2445. |
Question : What is an ecological pyramid? Write any two limitations of ecological pyramids |
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Answer» Solution :The graphical representation of the relation between the producers and the consumers in an ecosystem is called as an ecological pyramid. The limitations of ecological PYRAMIDS are: • It does not take into account the same species BELONGING to TWO or more trophic LEVELS. • It assumes a simple food chain, it does not accommodate a food web. • SAPROPHYTES are not given any place in ecological pyramids. |
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| 2446. |
Question : What is an ecological succession? |
| Answer» Solution :The sequential, GRADUAL and FAIRLY predicable CHANGE in the species composition in an area is called ECOLOGICAL succession, they are of two type PRIMARY succession and Secondary succession. | |
| 2447. |
Question : What is an anticodon? |
| Answer» SOLUTION : A base TRIPLET at the RECOGNITION end of tRNA molecule is an anticodon. | |
| 2448. |
Question : What is an anatropous ovule? |
| Answer» Solution :The OVULE which has a downwardly directed micropyle is CALLED an ANATROPOUS ovule. | |
| 2449. |
Question : What is an allopolyploid? |
| Answer» SOLUTION :An organism which possesses two or more basic sets of chromosomes derived from two DIFFERENT species is called allopolyploid. It can be developed by interspecific crosses and fertility is restored by CHROMOSOME doubling with colchicine TREATMENT. Eg. Triticale (cross between wheat and rye) | |
| 2450. |
Question : What are allergens? Name the two chemicals realised by mast cells in the body during allergy |
| Answer» Solution :The EXAGGERATED RESPONSE of the immune system to certain antigens PRESENT in the ENVIRONMENT. Chemicals REALISED are histamine and serotonin. | |