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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.
| 12701. |
Question : Mention two characteristics of stem cells. |
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Answer» Solution :The TWO IMPORTANT properties of STEM CELLS that differentiate them from other cells are: (i)Its ability to divide and GIVE rise to more stem cells by self-renewal. (ii)Its ability to give rise to specilised cells withspecific functions by the process of differentiation. |
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| 12702. |
Question : Mention two assumptions of Oparin and Haldane with reference to 'Origin of Life'. |
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Answer» SOLUTION :The FIRST from of life COULD have come from pre-existing non-living organic molecules. FORMATION of life was preceded by cheymical EVOLUTION. |
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| 12703. |
Question : Name any two theories of origin of life. Mention two assumptions of oparin and Haldane with reference to "origin of life" |
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Answer» Solution :Theory of chemical evolution was proposed by Oparin and Haldane. i) It STATES that "the first form of LIFE COULD have come from pre-existing non living organic molecules (like RNA, protein) ii) The FORMATION of diverse organic molecules from inorganic constituents". |
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| 12704. |
Question : Mention two advantages of lactational amenorrhea as a contraceptive method. |
| Answer» SOLUTION : The two advantages of lactational amenorrhea are given below : (i) As LONG as the mother breast feeds the child fully chances of conception are almost nil. (ii) Mother does not have to take any PILLS or devices for birth CONTROL. Its side effects are almost nil. | |
| 12705. |
Question : Mention the types of Inborn defense mechanism with an example each. |
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Answer» SOLUTION :i. Physical Barriers : They include the skin and the mucus coated epithelium of respiratory, gastro - intestinal and urinogential tracts, where the mucus helps in trapping the microbes. ii. Physiological Barriers : They include a. Acid of the stomach b. Lysozyme in saliva, tear etc, they prevent the MICROBIAL GROWTH. iii. Cellular Barriers : They include the following specialised cells, which phagocytose and DESTROY the microbes. a. Natural KILLER lymphocytes b. Neutrophils. |
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| 12706. |
Question : Mention the way by which culture media and explants are sterilized. |
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Answer» Solution :Culture MEDIA are STERILIZED by AUTOCLAVING. EXPLANTS are SURFACE sterilized by chemicals. |
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| 12707. |
Question : Mention the ways in which mangoes are used in Indian culinary. |
| Answer» Solution :Mango is the major table fruit of INDIA, which is rich in beta carotenes. It is utilized in many ways, as dessert, canned, dried and preserves in India cuisine. Sour, unripe mangoes are used in chutneys, pickles, side dishes, or MAY be EATEN raw with salt and chili. Mango pulp is MADE into jelly. AERATED and non-aerated fruit juice is a popular soft drink. | |
| 12708. |
Question : Define biodiversity depletion. Mention three causes for biodiversity loss. |
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Answer» Solution :Causes for BIODIVERSITY LOSS (i) Habitat loss and fragmentation (ii) Over EXPLOITATION (iii) Alien species invasions (IV) Co-extinctions. |
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| 12709. |
Question : Name the vegetative propagules of the following plants. a) Agave b) Ginger c) Bryophyllum |
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Answer» SOLUTION :a. Water HYACINTH - Offset B. Agave - Bulbil c. BANANA - Rhizome |
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| 12710. |
Question : Mention three basic steps for genetically modifying the organism. |
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Answer» Solution :(i) IDENTIFICATION of DNA with desirable genes. (II) INTRODUCTION of DNA with the host. (iii) Maintenance of INTRODUCED DNA in the host and transfer for the DNA on the progeny. |
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| 12711. |
Question : Enlist the various precautions one has to take to protect himself/herself from STDs. |
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Answer» Solution :(i) AVOID blood TRANSFUSION from an infected person. (ii) Avoid SEX with an unknown PARTNER and MULTIPLE partners. Always use condom. Avoic sharing of injections, needles,syringes and surgical instruments. |
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| 12712. |
Question : Mention the use of statin. |
| Answer» SOLUTION :BLOOD CHOLESTEROL LOWERING AGENT. | |
| 12713. |
Question : Mention the uses of cloning vectors in biotechnology. |
| Answer» SOLUTION :GENE CLONING,gene TRANSFER. | |
| 12714. |
Question : What is cyclosporin A? Mention its use. |
| Answer» Solution :It is USED as IMMUNE - suppressive AGENT in ORGAN transplantation. | |
| 12715. |
Question : Mention the units of vegetative propagation in plants. |
| Answer» SOLUTION :FOLLOWING are some units of vegetative propagation - RUNNER, rhizome, sucker, tuber, offset and bulb. | |
| 12716. |
Question : Mention the unique feature with respect to flowering and fruiting in bamboo species. |
| Answer» SOLUTION :FLOWER once in their LIFE TIME after 50-100 years, produce large no. of fruits and die. | |
| 12717. |
Question : Mention the types of ovule seen in the members of (a) Cactaceae (b) Leguminosae, (c) Polygonaceae (d) Primulaceae. |
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Answer» Solution :(a) CACTACEAE - Circinotropous ovule (B) Leguminosae - Campylotropous ovule (C) POLYGONACEAE - ORTHOTROPOUS ovule (d) Primulacea - Heminantropous ovule |
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| 12718. |
Question : Mention the types of malaria caused by the following species of plasmodium i. Plasmodium vivax ii. Plasmodium malariae iii. Plasmodium ovale iv. Plasmodium falciparum |
Answer» SOLUTION :
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| 12719. |
Question :Mention the types of evolution that has brought the similarity as seen in potato tuber and sweet potato |
| Answer» SOLUTION : CONVERGENT EVOLUTION | |
| 12720. |
Question : Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato |
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Answer» |
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| 12721. |
Question : What are carcinogens? Mention any two groups of carcinogens with an example for each. |
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Answer» Solution :TYPES of carcinogens- a) Physical carcinogens: Ionising radiation like X- rays and `gamma`- rays, non- ionizing radiations like UV- rays b) CHEMICAL carcinogens : tobacco smoke C) BIOLOGICAL carcinogens : oncogenic VIRUSES. |
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| 12722. |
Question : Mention the types of blotting techniques . |
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Answer» SOLUTION :TYPES of Blotting Techniques : Southerm Blotting : The transfer of DNA from AGAROSE gels to nitrocelluslose membrane. Northern Blotting : The transfer of RNA of nitrocellulose membrane. WESTERN Botting : Electrophoretic tranfer of proteins to nitrocellulose membrane. |
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| 12723. |
Question : Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato. |
| Answer» Solution :The potato tuber and sweet potato are analogous HENCE show convergent evolution. Potato tuber is the MODIFIED STEM while the sweet potato is a ROOT but they both perform the same function of food storage. | |
| 12724. |
Question : Mention the two major envionmentissuesof globalnature Increasinggreenhouse effect Depletionof ozonein thestratosphere . |
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Answer» SOLUTION :i)INCREASING greenshouseeffect Depletionof OZONEIN nthestratosphere |
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| 12725. |
Question : Mention the two categories of ecosystem. |
| Answer» SOLUTION :TERRESTRIAL and the AQUATIC. | |
| 12726. |
Question : Mention the two diseases resistance by mungbean through mutation breeding. |
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Answer» Solution :Yellow mosaic VIRUS disease and powdery mildew disease. Detailed Answer: The mutation techniques help in the production of the MUNG bean varieties which are RESISTANT to the yellow VEIN mosaic virus and the powdery mildew. |
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| 12727. |
Question : Mention the two addition processing which hnRNA needs to undergo after spicing so as to become functional. |
| Answer» SOLUTION :CAPING and TAILING | |
| 12728. |
Question : In Scratch which blocks are blue? |
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Answer» Control |
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| 12729. |
Question : Mention the three cells found in pollen grain when it is shed at the three celled stage. |
| Answer» SOLUTION :Vegetative CELL and two MALE GAMETES. | |
| 12730. |
Question : Mention the technique used to separate DNA fragment in rDNA technology. |
| Answer» SOLUTION :GEL ELECTROPHORESIS. | |
| 12731. |
Question : Mention the target cells of luteinising hormone in human males and females. Explain the effect and the changes which the hormone induces in each case. |
| Answer» Solution :The target sells ofluteinsing HORMONE in males are the leydig ceHs and in females are themature growing folliclesLH in males stimulates the leydig cellsof tests to synthesise and secreteAndrogens which in turn stimulate the process of spermatogenesis .LH in femalales stimulatethe otimulate the ovulation, transformation of graafian follicle intocorpus LUTEUM to SECRETE progesterone which prepares the ENDOMETRIUM to receive and implant blastocyst | |
| 12732. |
Question : Mention the technique of genetic engineering |
| Answer» Solution :(a) Creation of recombinant DNA (B) GENE CLONING(c.) Gene transfer | |
| 12733. |
Question : Mention the technical term for expressing an animal's place of living in a biotic environment and its functional relationship with other organisms in an ecosystem . |
| Answer» SOLUTION :TROPHIC LEVEL and FOOD CHAIN | |
| 12734. |
Question : Mention any three symptoms of (a) Phenylketonuria (b) Down's syndrome |
| Answer» Solution :Servere MENTAL RETARDATION, light pigmentation of skin and hair. Phenylpyruvic ACID is EXERTED in the URINE. | |
| 12735. |
Question : Mention the strategy used to increase homozygosity in cattle for desired traits |
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| 12736. |
Question : Mention the symptoms of Down's syndrome. |
| Answer» Solution :Severe mental retardation, DEFECTIVE DEVELOPMENT of the central nervous SYSTEM, increased SEPARATION between the eyes, flattened nose, ears are malformed, mouth is constantly open and the tongue protrudes. | |
| 12737. |
Question : Mention the symptoms of AIDS ? |
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Answer» Solution :There is always a time-lag between the infection and appearance of AIDS symptoms. This period may vary from very few months to many years(usually 5 to 10 years). Though, HIV is present in the body, the person seems healthy and there is no symptoms of disease - but this person can act as a vector of HIV. Body aches till 4 weeks. FEVER, diarrhea with BLOOD loss, loss of appetite, WEIGHT loss, fatigueness are Aids Related Complexes (ARC). During the final stage. 10 percent weight loss without any reason, undiagnosed fever till 1 month, diarrhoea, common cold, cough, pneumonia, cancer of blood vessels of skin and INFLAMMATION of lymph NODES. |
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| 12738. |
Question : Mention the steps involved in DNA fingerprinting. |
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Answer» Solution :Dr. Alec Jeffreys developed the technique of DNA finger printing an attempt to identify DNA marker for INHERITED diseases. DNA finger printing uses short NUCLEOTIDE repeats called Variable Number of Tandem Repeats (VNTRS) as markers. VNTRS vary from person to person. Methodology: 1. DNA is isolated and extracted from the cell or tissue by centrifugation. 2. By the process of polymerase CHAIN reaction (PCR) many copies are produced, this step is called amplification. 3. DNA is cut into small fragments by treating with restriction endonuclease. 4. DNA fragments are separated by agarose gel ELECTROPHORESIS. 5. The separated DNA fragments are visualized under ultraviolet radiation after applying suitable dye. 6. The DNA is transferred from electrophoresis plate to nylon membrane sheet. This is called southern blotting. 7. Probes are now added which bind to specific nucleotide sequences that are complementary to them this is called hybridisation. 8. The hybridised DNA fragments are detected by autoradiography. They are observed as dark bands on x-ray film. |
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| 12739. |
Question :Mention the specific geographical region where these organisms are found. Name and explain the phenomenon that has resulted in the evolution of such diverse species in the region. Explain giving reason the existence of placental wolf and Tasmania wolf sharing the same habitat. |
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Answer» Solution :Australia Adaptive radiation (Divergent evolution) . THEPROCESS of evolution of DIFFERENT SPECIES in a given geographical area starting ,from a point and literallyradiating to other areas of geography (habitats) is called adaptive radiation. It is the DEVELOPMENT of different function structures from a common ancestral form. Placental wolf and Tasmanian Wolf share SIMILAR habitat due to convergent evolution and evolved into unrelated groups of organisms. Koala 
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| 12740. |
Question : Mention the specific geographical region where marsupials are found. |
| Answer» SOLUTION :AUSTRALIA | |
| 12741. |
Question : Mention the scientific term used for modified form of reproduction in which seeds are formed without fusion of gametes. |
| Answer» Solution :The scientific term used for modified form of reproduction in which SEEDS are FORMED WITHOUT fusion of gametes ( fertilisation ) is apomixis. | |
| 12742. |
Question : Mention the role of vectors in recombinant DNA technology . Give any two examples . |
| Answer» SOLUTION :Vectors are used for inserting the gene of INTEREST and amplify-ing it in a SUITABLE host. Eg. Plasmid, BACTERIOPHAGE. | |
| 12743. |
Question : Mention the role of the codons AUG and UGA during protein synthesis. |
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Answer» SOLUTION :AUG it ACTS as a INITIATOR condon in TRANSLATION. UGA it acts as the terminator condon. |
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| 12744. |
Question : Mention the role of prolactin in lactational amenorrhoea. |
| Answer» Solution :SUCKLING by the baby during breast-feeding stimulates the pituitary to SECRETE increased prolactin hormone in order to increase milk production. This high prolactin concentration in the mother.s blood may PREVENT menstrual cycle by suppressing the release of GnRH (Gonadotropin RELEASING Hormone) from hypothalamus and gonadotropin secretion from the pituitary. | |
| 12745. |
Question : Mention the role of pacemaker in human heart. |
| Answer» Solution :PACEMAKER can GENERATE wave of CONTRACTION or cardiac IMPULSE for rhythmic contraction of HEART. | |
| 12746. |
Question : Mention the role of Methanobacterium in rumen of cattle. |
| Answer» Solution :The Methanobacterium HELP in the 8breakdown of cellulose and play an IMPORTANT ROLE in the nutrition of CATTLE. | |
| 12747. |
Question : Mention the role of LH during spermatogenesis. |
| Answer» SOLUTION :LH STIMULATES the SYNTHESIS and secretion of ANDROGENS. | |
| 12748. |
Question : Mention the role of 'genetic mother' in MOET. |
| Answer» SOLUTION :The genetic MOTHER is used for SUPER ovulation in MOET | |
| 12749. |
Question : Mention the role of cyanobacteria in origin of life. |
| Answer» SOLUTION :Cyanobacteria is considered as the first ANIMAL evolved on earth. They were AEROBIC PHOTOTROPHS. The fossil study reveals that those were similar to today’s cyanobacteria. | |
| 12750. |
Question : Mention the role of Azospirillum as biofertilizer. |
| Answer» SOLUTION :Azospirillum fix atmospheric NITROGEN, thus enriching the nitrogen CONTENT of the SOIL. | |