24277 + Interview Questions in Biology in Class 12 Page 123 InterviewSolution

6101.	Question : The function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to:
Answer» CONVERT ATMOSPHERIC `N_2` to `NH_3` Convert ammonia to nitrite Transport oxygen for ACTIVITY of NITROGENASE Protect nitrogenase from oxygen Answer :D

Discussion

6102.	Question : The function of IgE is
Answer» mediate in ALLERGIC response activation of B-cells PROTECTION from inhaled and ingested pathogens stimulation of COMPLEMENT system, PASSIVE immunity to foetus Answer :A

Discussion

6103.	Question : The function of insulin hormone is :-
Answer» To release GLUCOSE from LIVER CELLS and glycogenolysis promotion To increase CELLULAR glucose uptake and consumption To increase blood sugar level To increase lipolysis Answer :B

Discussion

6104.	Question : The function of contractile vacuole is_____
Answer» ANSWER :OSMOREGULATION

Discussion

6105.	Question : The function of copper ions in copper releasing IUD's is
Answer» They INHIBIT gametogenesis They make uterus unsuitable for impantation They inhibit ovulation The suppress sperm MOTILITY and fertilising capacity of SPERMS SOLUTION :The function of copper ions in copper RELEASING IUD's is that they suppress sperm motility and fertilising capacity of sperms.

Discussion

6106.	Question : The fully processed hnRNA is called as (i)____ and is transproted out of the(ii)____ into the (iii) ____ for translation.
Answer» `{:("(i)","(II)","(III)"),("MRNA","nucleus","CYTOPLASM"):}` `{:("(i)","(ii)","(iii)"),("mRNA","cytoplasm","nucleus"):}` `{:("(i)","(ii)","(iii)"),("tRNA","cytoplasm","nucleus"):}` `{:("(i)","(ii)","(iii)"),("tRNA","nucleus","cytoplasm"):}` SOLUTION :(a)

Discussion

6107.	Question : The function of a selectable maker is
Answer» ELIMINATING TRANSFORMATION and permitting non-TRANSFORMANTS Identify ori site Elimination of non-transformantsand permitting transformants To destroy recognition SITES ANSWER :C

Discussion

6108.	Question : The funcation of the secretion of prostate glands is to
Answer» inhibit sperm activity attract sperms stimulate sperm activity none of these. Solution :The Prostate gland is a single large gland that surrounds the URETHRA. It produces a SLIGHTLY alkaline, mailky secretion whichforms `25%` of the volume of semen. It PROCESSES citric acid, enzymes (acid phosphatase, amylase, pepsinogen) and prostaglandins). Secretion of the prostate gland NOURISHES and activites the speratozoa to swim.

Discussion

6109.	Question : The fruit which breaks into five valves on touching and results in explosive dispersal of seeds is
Answer» Ecballium BALSAM Entada gigas Ruellia ANSWER :B

Discussion

6110.	Question : The fruit of wood apple develop from multicarpellary syncarpous multioculr ovary This is called as
Answer» ETAERIO of a ACHENE AMPHISARCA balausta hesperidium ANSWER :B

Discussion

6111.	Question : The fruit of regma breaks up into single seeded dehisecnt parts called coccl these cocci remain attached onto
Answer» WINGED APPENDAGES appapus STYLOPODIUM CARPOPHORE ANSWER :D

Discussion

6112.	Question : The fruit of coconut is called as
Answer» Pepo Etaerio Pome Drupe Answer :D

Discussion

6113.	Question : The fruit of coconut is :
Answer» Drupe Hesperidium Composite FRUIT Berry Answer :A

Discussion

6114.	Question : the frequency of recombination between gene pairs on the same chromosome as measured of the distance between genes was explained by:
Answer» GREGOR J Mendel Alfred Sturtevant Sutton Boveri T.H. Morgan Answer :B

Discussion

6115.	Question : The front end of filament is connected to what?
Answer» Connective Placenta Thalamus or petal Anther Answer :C

Discussion

6116.	Question : The frist clinical gene therapy was done of the treatment of:
Answer» SCID Toxoid Toxin Antibiotic Answer :D

Discussion

6117.	Question : The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :
Answer» T.H. Morgan GREGOR J. MENDEL ALFRED Sturtevant Sutton Boveri Solution :Alfred Sturtevant

Discussion

6118.	Question : The frequency of an autosomal recessive gene is 0.4. Then what will be the frequency of heterozygotes in progeny among 4000 individual ?
Answer» 2000 1920 2400 1600 Answer :B

Discussion

6119.	Question : The frequency of crossing over would be higher if
Answer» TWO genes are located closely Two genes are FAR apart on a chromosome Two genes are not located in the same chromosome None of the above Answer :B

Discussion

6120.	Question : The frequencies of alleles in a Mendelian population are subjected to influence of
Answer» GENETIC DRIFT Mutation Natural selection All the above SOLUTION :All the above

Discussion

6121.	Question : The freely movable joint is called______.
Answer» ANSWER :SYNOVIAL JOINT

Discussion

6122.	Question :The free-living fungus Trichoderma can be used for
Answer» Killing insects BIOLOGICAL control of plant diseases Controlling butterfly caterpillars Producing antibiotics SOLUTION :The free-living fungus Trichoderma can be USED for biological control of plant diseases. This is commonly found in soil.

Discussion

6123.	Question : The fragmentation of a forest and deforestation lead to the disappearance of species and drastic climatic variation. a. Give some adverse effects of indiscriminate cutting down of forests. b. Suggest some measures to check deforestation.
Answer» Solution :The indiscriminate cutting down of forest is also KNOWN as deforestation. Due to deforestation the main problem is the soil erosion. The rain drops DIRECTLY fall on the ground causing soil erosion. The soil will be carried to the RIVER and gets deposited in the river bed. The FORESTS are also having a significant role in the climatic regulation. The measures for checking deforestation can be only done by public awareness and STRICT legislations.

Discussion

6124.	Question : The free - living fungus Trichoderma can be used for :
Answer» KILLING insects biological CONTROL of PLANT diseases controlling BUTTERFLY caterpillars producing antibiotics Answer :B

Discussion

6125.	Question : The free genes started absorbing the organic compounds from the prebiotic soup and evolved into
Answer» ANAEROBIC autotrophs AEROBIC HETEROTROPHS Aerobic protobionts Anaerobic heterotrophs Answer :D

Discussion

6126.	Question : The free energy per mole -of a substance in a chemical system.
Answer» ANSWER :CHEMICAL POTENTIAL

Discussion

6127.	Question : The fraction of water held by particles of soil surfaces.
Answer» ANSWER :HYGROSCOPIC WATER

Discussion

6128.	Question : The fraction of single heterozygous individuals in the F_(2) generation of a typical dihyrbid cross
Answer» `8//16` `10//16` `9//16` `6//16` ANSWER :A

Discussion

6129.	Question : The fraction of single heterozygous double dominant individuals in the F_(2) of a Mendelian dihybrid cross
Answer» `4//16` `1//16` `8//16` `9//16` ANSWER :A

Discussion

6130.	Question : The fraction of double homozygous recombinants in the F_(2)of a Mendelian dihybrid cross is
Answer» `6//16` `2//16` `4//16` `3//16` ANSWER :B

Discussion

6131.	Question : The fraction of single homozygous individuals in the F_(2) of a typical dihybrid cross is
Answer» `9//16` `4//16` `2//16` `1//16` ANSWER :D

Discussion

6132.	Question : The four elements that make up 99% of all elements found in a living system are
Answer» H,O, C, N C, H, O, S C, H, O , P C, N, O, P Answer :A

Discussion

6133.	Question : The four pyramids (A, B, C and D) given below represent four different type of ecosystem ecological pyramids, which one of these is correctly identified in the options given, along with its correct ecosystem & type of pyramid:-
Answer» ANSWER :C

Discussion

6134.	Question :The four nitrogen base sequences which form the code words for DNA language are :
Answer» UTAC ACTU AGGU ATCG Answer :D

Discussion

6135.	Question : The four nitrogen base sequence which form the code words for DNA language are
Answer» UTAC ACTU AGCU ATCG ANSWER :D

Discussion

6136.	Question : The fossilised microbial mats which consist of filamentous prokaryotes and trapped sediments are
Answer» STROMATOLITES Sulphur bacteria Saprophytes NONE of the above Answer :A

Discussion

6137.	Question : The four carbon compound formed during the regeneration of RUBP in Calvin cycle
Answer» Sedoheptulose PHOSPHATE Xylulose phosphate ERYTHROSE phosphate Ribose phosphate ANSWER :C

Discussion

6138.	Question : The formula of population density is ……….(A) N_(t+1) = N_(t) + [(B-I)-(D+E)](B) N_(t+1) = N_(t) + [(B+I)-(D+E)](C) N_(t+1) = N_(t) + [(D+E)-(B+I)](D) N_(t+1) = N_(t) + [(B+I)-(D-E)]
Answer» `N_(t+1) = N_(t) + [(B-I)-(D+E)]` `N_(t+1) = N_(t) + [(B+I)-(D+E)]` `N_(t+1) = N_(t) + [(D+E)-(B+I)]` `N_(t+1) = N_(t) + [(B+I)-(D-E)]` ANSWER :B

Discussion

6139.	Question : The formula of growth rate for population in given time is :
Answer» `DT//DN = RN` `dt//rN = dN` `rN//dN = dt` `dN//dt = rN` ANSWER :D

Discussion

6140.	Question : The formula of growth rate for population in a given time is
Answer» dt/dN= rN dt/rN = dN rn/dN=dt dN/dt=rN Answer :D

Discussion

6141.	Question : The formula for exponential population growth
Answer» `dN//RN = rN` `DT//dN = rN` `dN//rnN= r//N` `rN//dN = dt` ANSWER :A

Discussion

6142.	Question : The formula for exponential population growth is :
Answer» RN / DN = DT dN / dt = rN dt.dN = rN dN / rN = dt Answer :B

Discussion

6143.	Question : The formula, dN/dt = g represents
Answer» environmental RESISTANCE vital index carrying CAPACITY EXPONENTIAL growth Answer :D

Discussion

6144.	Question : The formation of primary endosperm nucleus is called as triple fusion . Why is it called so ?
Answer» Solution :The primary endosperm nucleus is formed by the fusion of secondary nucleus and a MALE gamete and the secondary NUCLEOUS is formed by the fusion of two haploid POLAR nuclei . As three fusions are taking place in the formation of primary endosperm nucleus it is CALLED TRIPLE fusion .

Discussion

6145.	Question : The formation of pericarp takes place from :
Answer» OVARY wall Outer INTEGUMENT Inner integument Placenta Answer :A

Discussion

6146.	Question : The formation of living and non-living world simultaneously is the main feature of
Answer» Theory of PANSPERMIA Theory of cosmozoic ORIGIN Theory of catastrophism Theory of ABIOGENESIS Answer :B

Discussion

6147.	Question : The formation of microspores from pollen mother cells through meiosis is known as?
Answer» SOLUTION :Microsorogenesis

Discussion

6148.	Question : The formation of erythrocyte in foetus takes place in
Answer» LIVER and spleen Red BONE marrow Blood plasma Sarcoplasm Answer :A

Discussion

6149.	Question : The formation of chromatid takes place in,
Answer» `G_1` PHASE `G_2` phase S phase M phase Answer :C

Discussion

6150.	Question : The form of carbon used for the carboxylation of phosphoenolpyruvate in C_4 plants is
Answer» `CH_4` `HCO_3^(-)` `H_2 CO_3` `C_2H_4` ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to:

Question : The function of IgE is

Question : The function of insulin hormone is :-

Question : The function of contractile vacuole is_____

Question : The function of copper ions in copper releasing IUD's is

Question : The fully processed hnRNA is called as (i)____ and is transproted out of the(ii)____ into the (iii) ____ for translation.

Question : The function of a selectable maker is

Question : The funcation of the secretion of prostate glands is to

Question : The fruit which breaks into five valves on touching and results in explosive dispersal of seeds is

Question : The fruit of wood apple develop from multicarpellary syncarpous multioculr ovary This is called as

Question : The fruit of regma breaks up into single seeded dehisecnt parts called coccl these cocci remain attached onto

Question : The fruit of coconut is called as

Question : The fruit of coconut is :

Question : the frequency of recombination between gene pairs on the same chromosome as measured of the distance between genes was explained by:

Question : The front end of filament is connected to what?

Question : The frist clinical gene therapy was done of the treatment of:

Question : The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :

Question : The frequency of an autosomal recessive gene is 0.4. Then what will be the frequency of heterozygotes in progeny among 4000 individual ?

Question : The frequency of crossing over would be higher if

Question : The frequencies of alleles in a Mendelian population are subjected to influence of

Question : The freely movable joint is called______.

Question :The free-living fungus Trichoderma can be used for

Question : The fragmentation of a forest and deforestation lead to the disappearance of species and drastic climatic variation. a. Give some adverse effects of indiscriminate cutting down of forests. b. Suggest some measures to check deforestation.

Question : The free - living fungus Trichoderma can be used for :

Question : The free genes started absorbing the organic compounds from the prebiotic soup and evolved into

Question : The free energy per mole -of a substance in a chemical system.

Question : The fraction of water held by particles of soil surfaces.

Question : The fraction of single heterozygous individuals in the F_(2) generation of a typical dihyrbid cross

Question : The fraction of single heterozygous double dominant individuals in the F_(2) of a Mendelian dihybrid cross

Question : The fraction of double homozygous recombinants in the F_(2)of a Mendelian dihybrid cross is

Question : The fraction of single homozygous individuals in the F_(2) of a typical dihybrid cross is

Question : The four elements that make up 99% of all elements found in a living system are

Question : The four pyramids (A, B, C and D) given below represent four different type of ecosystem ecological pyramids, which one of these is correctly identified in the options given, along with its correct ecosystem & type of pyramid:-

Question :The four nitrogen base sequences which form the code words for DNA language are :

Question : The four nitrogen base sequence which form the code words for DNA language are

Question : The fossilised microbial mats which consist of filamentous prokaryotes and trapped sediments are

Question : The four carbon compound formed during the regeneration of RUBP in Calvin cycle

Question : The formula of population density is ……….(A) N_(t+1) = N_(t) + [(B-I)-(D+E)](B) N_(t+1) = N_(t) + [(B+I)-(D+E)](C) N_(t+1) = N_(t) + [(D+E)-(B+I)](D) N_(t+1) = N_(t) + [(B+I)-(D-E)]

Question : The formula of growth rate for population in given time is :

Question : The formula of growth rate for population in a given time is

Question : The formula for exponential population growth

Question : The formula for exponential population growth is :

Question : The formula, dN/dt = g represents

Question : The formation of primary endosperm nucleus is called as triple fusion . Why is it called so ?

Question : The formation of pericarp takes place from :

Question : The formation of living and non-living world simultaneously is the main feature of

Question : The formation of microspores from pollen mother cells through meiosis is known as?

Question : The formation of erythrocyte in foetus takes place in

Question : The formation of chromatid takes place in,

Question : The form of carbon used for the carboxylation of phosphoenolpyruvate in C_4 plants is

Question : The fully processed hnRNA is called as (i) and is transproted out of the(ii) into the (iii) for translation.