24277 + Interview Questions in Biology in Class 12 Page 236 InterviewSolution

11751.	Question : Define reproductive cycle. Name the reproductive cycle that occur in non-primates.
Answer» SOLUTION :Oestrous CYCLE

Discussion

11752.	Question : Name the regions marked A, B and C.
Answer» Solution :A = Bam HI B= Origin of REPLICATION C = `amp^R` (SELECTABLE Markerr)

Discussion

11753.	Question : Name the reproductive cycle that occur in non-primates.
Answer» SOLUTION :Oestrous CYCLE

Discussion

11754.	Question : Name the regions marked A, B and C.
Answer» Solution :A : Bam HI, B : PST I, C : `AMP^(R )`

Discussion

11755.	Question : Name the reactions when, alpha-ketogluterate is converted into succinyl Co-A in Krebs cycle.
Answer» Solution :The reactions INVOLVED during conversion of `ALPHA`-ketogluterate into SUCCINYL Co-A in KREBS cycle are decarboxylation and OXIDATION or oxidative decarboxylation.

Discussion

11756.	Question : Name the reflex action which suddenly removes air through the nasal cavity to clean it
Answer» ANSWER :SNEEZING

Discussion

11757.	Question : Name the reaction centers of PS I and PS II.
Answer» <P> Solution :REACTION CENTRE in PS I is Chl a `(P_(700))` and in PS II is Chl a `(P_(680))`.

Discussion

11758.	Question : The mouth in some Mollusca contains a rasping organ forfeeding, called _______.
Answer» ANSWER :RADULA,

Discussion

11759.	Question : Name the radioactive probe used in India for DNA fingerprinting.
Answer» SOLUTION :Banded krait minisatellite located on Y-chromosome of female banded krait SNAKE was used in INDIA for DNA fingerprinting.

Discussion

11760.	Question : Name the protein which is present in collagen fibre
Answer» ANSWER :COLLAGEN

Discussion

11761.	Question : Name the protein which is present in elastic fibres.
Answer» ANSWER :ELASTIN

Discussion

11762.	Question : Name the protein that produced in a heterozygous host .
Answer» ANSWER :A::B::C

Discussion

11763.	Question : Name the products other than milk products obtained by dairy farming.
Answer» Solution :COW DUNG, manure, FUEL cakes, gobar GAS, ETC.

Discussion

11764.	Question : Name the protective envelop of an ovule
Answer» PERICARP Integuments Nucellus Funicle Solution :POLLEN VIABILITY

Discussion

11765.	Question : Name the products of the following combinations. Bacterial plasmid + cos - site = ........... Bacterial plasmid + phage - DNA = .........
Answer» SOLUTION :COSMID PHAGEMID

Discussion

11766.	Question : Name the products of lactic acid fermentation.
Answer» SOLUTION :Latic ACID, ETHANOL and `CO_(2)`.

Discussion

11767.	Question : Name the product of fertilization that forms the kernel of coconut. How does the kernel differ from coconut water?
Answer» SOLUTION :The PRIMARY endosperm cell/PEC form the kernel of COCONUT. The kernel of coconut is thecellular endosperm, while the coconut water is the FREE NUCLEAR endosperm/liquid endosperm.

Discussion

11768.	Question : Name the process X and Y given in the given flow chart.
Answer» X = Translation, Y = TRANSCRIPTION X = Transcription, Y Translation X = GENE synthesis, Y = Transcription X = Gene transcription, Y = Gene ISOLATION Solution :X = Transcription, Y = Translation

Discussion

11769.	Question : Name the process through which microspore tetrads are formed . What would be the ploidy of the cells of tetrad ?
Answer» SOLUTION :Microspores are FORMED by the process of microsporogenesis The cells of MICROSPORE TETRAD are haloid (n).

Discussion

11770.	Question : Name the process of respiration which does not involve intake of oxygen (O_(2)) and release of carbon dioxide (CO_(2)).
Answer» SOLUTION :The PROCESS of respiration which does not involve INTAKE of OXYGEN `(O_(2))` and release of CARBON dioxide `(CO_(2))` is known as fermentation.

Discussion

11771.	Question : Name the process that breaks the linkage between two genes of the same chromosome and brings about recombination.
Answer» ANSWER :CROSSING over

Discussion

11772.	Question : Name the process of formation of white blood cells.
Answer» SOLUTION :Leucopoiesis.

Discussion

11773.	Question : Name the process in which a tumour successfully spreads to the other parts of the body, grows and destroys healthy tissues.
Answer» Solution :The process by which a tumour SUCCESSFULLY SPREADS to the other parts of the body, grows and destroys the healthy tissue is KNOWN as metastasis.

Discussion

11774.	Question : Name the process by which glycogen is converted into glucose.
Answer» ANSWER :GLYCOGENOLYSIS

Discussion

11775.	Question : Name the process by which the phenotypically significant mutations are created and cell's genome size is altered.
Answer» Transposition Transduction Transformation Transfection Answer :A

Discussion

11776.	Question : Name the process bby which all the three types of non-genetic RNAs are produced on DNA template.
Answer» Translation Transcription Termination Replication Answer :B

Discussion

11777.	Question : Name the process and the phenomenon involved in the reproduction of Amoeba under unfavourable conditions.
Answer» SOLUTION :PROCESS: ENCYSTATION, PHENOMENON: SPORULATION

Discussion

11778.	Question : Name the principles underlying cloning technique.
Answer» SOLUTION : (a) Nuclear TRANSFER (b) Totipotency (ability of a CELL to DEVELOP into entire ORGANISM)

Discussion

11779.	Question : Name the principle minerals involved in petrifaction.
Answer» Solution :Iron PYRITES, SILICA, calcium carbonate and BICARBONATES of calcium and MAGNESIUM.

Discussion

11780.	Question : Name the primary and secondary lymphoid organs .
Answer» Solution :Primary lymphoid organs consist of immature lymphocytes differentiate to mature antigen sensitive lymphocytes and after maturation, lymphocytes migrate to secondary lymphoid organs. Bone marrow is the main lymphoid organ where all the blood cells including lymphocytes are produced. It is the site of B-lymphocytes maturation. Thymus is a lobed organ located near the heart and beneath the breast bone. It is large at the time of birth, but with age, the size keeps on decreasing and becomes very small on attaining puberty. Growth and maturation of T-lymphocytes takes place here. Secondary lymphoid organs provide the sites for the interaction of lymphocytes with the antigen, which then proliferate to become effector cells. The secondary lymphoid organs are as follow. SPLEEN is a large bean shaped organ containing lymphocytes, phagocytes and large number of erythrocytes. It filters the blood by trapping blood borne microorganisms. Lymph nodes are small structures located at different points along the lymphatic SYSTEM. Their function is to trap the microorganism or other ANTIGENS that enter the lymph and tissue fluid. The trapped antigens in the lymph nodes are responsible for the activation of lymphocytes present there and cause the immune response. Mucosal Associated Lymphoid Tissue is located within the lining of major tracts in the body like respiratory, digestive, urogenital tracts. MALT constitutes about 50% of the lymphoid tissue in HUMAN body.

Discussion

11781.	Question : Name the primary and secondary lymphoid organs.
Answer» Solution :Thymus and BONE marrow are PRIMARY lymphoid organs. Lymph nodes, SPLEEN, tonsils etc. are secondary lymphoid organs.

Discussion

11782.	Question : Name the primary and secondary lymphoid organs
Answer» Solution :Primary lymphoid organs are - Bone marrow and Thymus - where IMMATURE LYMPHOCYTES differentitate into ANTIGEN sensitive lymphocytes. Secondary lymphoid organs are - spleen, lymphnodes, tonsils, peyer.s PATCHES of small intestine and appendix.

Discussion

11783.	Question : Name the prcess by which fructose and some amino acids are absorbed in small intestine.
Answer» ANSWER :FACILITATED TRANSPORT

Discussion

11784.	Question : Name the practice in which uneconomic animals must be prevented from reproducing
Answer» WEEDING Heedig BREEDING NONE of these Answer :A

Discussion

11785.	Question : Name the possible sources to energy in most accept theory of origin of life
Answer» Solution :UV radiations, ELECTRIC ENERGY produced during lightening , heat of the EARTH

Discussion

11786.	Question : Name the pore found on the exine of the pollen grains(A) Micropores(B) Germpore(C) Micropyle(D) Lentical
Answer» Micropores Germpore Micropyle Lentical Answer :B

Discussion

11787.	Question : Name the plasmid present in Agroluderintumefaciens.
Answer» SOLUTION :TI PLASMID

Discussion

11788.	Question : Define plasmid. Name the plasmid extracted from Agrobacterium tumefaciens.
Answer» SOLUTION :Ti-plasmid.

Discussion

11789.	Question : Name the plasmid present in Agrobacterium tumefaciens.
Answer» SOLUTION :TI PLASMID,

Discussion

11790.	Question : Plant or animals expressing a modified endogenous gene are known as______ organisms.
Answer» SOLUTION :TRANSGENIC PLANTS

Discussion

11791.	Question : Name the plants A, B, C and D of the anatropous ovule (Figure 2) given above.
Answer» Solution :A = Micropyle, B = OUTER INTEGUMENT, C = Embryo sac

Discussion

11792.	Question : Name the plant whose sap is used in making 'Toddy'. Mention the process involved in it.
Answer» SOLUTION :PALM TREE, by FERMENTATION.

Discussion

11793.	Question : Name the plant species used for making paper pulp.
Answer» Solution :WOOD of MELIA AZADIRACHTA, Neolamarkia chinensis, Casuarina spp and EUCALYPTUS spp are USED for making paper pulp.

Discussion

11794.	Question : Name the plant that flowers once is 12 years.
Answer» SOLUTION :`UL("Strobilanthus kunthiana")` or Neelakuranji.

Discussion

11795.	Question : Name the plant which exhibit unusal flowering phenomenon.
Answer» SOLUTION :Some bamboo species flower only once in their lifetime GENERALLY 50-100 YEARS, produces large number of fruits and die. Strobilanthus kunthiana (neelakuranji) flowers once in 12 years. Its MASS flowering transforms large tracks of hilly areas in Kerala, Karnataka and Tamilnadu into blue stretches and attracts a large number of TOURISTS.

Discussion

11796.	Question : Name the plant source of Cocaine and Heroin.
Answer» SOLUTION :COCAINE is obtained from ERYTHROXYLUM COCA. Heroin is obtained from POPPY plant.

Discussion

11797.	Question : Name the plant source from which the following products are obtained. (a) Maida (b) Rubber ( c) Morphine (d) Coffee
Answer» SOLUTION :`{:("(a) Maida",-,"Triticum durum"),("(b) Rubber",-,"HEVEA brasiliensis"),("(c) MORPHINE",-,"Papaver somniferum"),("(d) Coffee",-,"Coffea ARABICA"):}`

Discussion

11798.	Question : Name the plant show adventive embryonic cells
Answer» SUNFLOWER and Mango Citrus and Mango LEMON and MAIZE Lemon and Palms Answer :B

Discussion

11799.	Question : Name the plant hormones which are involved in growth promoting activities such as cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting and seed formation.
Answer» ANSWER :AUXIN, GIBBERELLIN, CYTOKININ

Discussion

11800.	Question : Name the plant from which cocaine is obtained.
Answer» SOLUTION :ERYTHROXYLUM COCA.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Define reproductive cycle. Name the reproductive cycle that occur in non-primates.

Question : Name the regions marked A, B and C.

Question : Name the reproductive cycle that occur in non-primates.

Question : Name the regions marked A, B and C.

Question : Name the reactions when, alpha-ketogluterate is converted into succinyl Co-A in Krebs cycle.

Question : Name the reflex action which suddenly removes air through the nasal cavity to clean it

Question : Name the reaction centers of PS I and PS II.

Question : The mouth in some Mollusca contains a rasping organ forfeeding, called _______.

Question : Name the radioactive probe used in India for DNA fingerprinting.

Question : Name the protein which is present in collagen fibre

Question : Name the protein which is present in elastic fibres.

Question : Name the protein that produced in a heterozygous host .

Question : Name the products other than milk products obtained by dairy farming.

Question : Name the protective envelop of an ovule

Question : Name the products of the following combinations. Bacterial plasmid + cos - site = ........... Bacterial plasmid + phage - DNA = .........

Question : Name the products of lactic acid fermentation.

Question : Name the product of fertilization that forms the kernel of coconut. How does the kernel differ from coconut water?

Question : Name the process X and Y given in the given flow chart.

Question : Name the process through which microspore tetrads are formed . What would be the ploidy of the cells of tetrad ?

Question : Name the process of respiration which does not involve intake of oxygen (O_(2)) and release of carbon dioxide (CO_(2)).

Question : Name the process that breaks the linkage between two genes of the same chromosome and brings about recombination.

Question : Name the process of formation of white blood cells.

Question : Name the process in which a tumour successfully spreads to the other parts of the body, grows and destroys healthy tissues.

Question : Name the process by which glycogen is converted into glucose.

Question : Name the process by which the phenotypically significant mutations are created and cell's genome size is altered.

Question : Name the process bby which all the three types of non-genetic RNAs are produced on DNA template.

Question : Name the process and the phenomenon involved in the reproduction of Amoeba under unfavourable conditions.

Question : Name the principles underlying cloning technique.

Question : Name the principle minerals involved in petrifaction.

Question : Name the primary and secondary lymphoid organs .

Question : Name the primary and secondary lymphoid organs.

Question : Name the primary and secondary lymphoid organs

Question : Name the prcess by which fructose and some amino acids are absorbed in small intestine.

Question : Name the practice in which uneconomic animals must be prevented from reproducing

Question : Name the possible sources to energy in most accept theory of origin of life

Question : Name the pore found on the exine of the pollen grains(A) Micropores(B) Germpore(C) Micropyle(D) Lentical

Question : Name the plasmid present in Agroluderintumefaciens.

Question : Define plasmid. Name the plasmid extracted from Agrobacterium tumefaciens.

Question : Name the plasmid present in Agrobacterium tumefaciens.

Question : Plant or animals expressing a modified endogenous gene are known as______ organisms.

Question : Name the plants A, B, C and D of the anatropous ovule (Figure 2) given above.

Question : Name the plant whose sap is used in making 'Toddy'. Mention the process involved in it.

Question : Name the plant species used for making paper pulp.

Question : Name the plant that flowers once is 12 years.

Question : Name the plant which exhibit unusal flowering phenomenon.

Question : Name the plant source of Cocaine and Heroin.

Question : Name the plant source from which the following products are obtained. (a) Maida (b) Rubber ( c) Morphine (d) Coffee

Question : Name the plant show adventive embryonic cells

Question : Name the plant hormones which are involved in growth promoting activities such as cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting and seed formation.

Question : Name the plant from which cocaine is obtained.