24277 + Interview Questions in Biology in Class 12 Page 201 InterviewSolution

10001.	Question : presence of which hormone is diagnosed in Gravidex test?
Answer» hCG hPL Chorionic thyrotropin Estrogen Answer :A

Discussion

10002.	Question : Presence of vessels in the xylem is
Answer» A PRIMITIVE CHARACTER An advanced character A VESTIGIAL character None of the above Answer :B

Discussion

10003.	Question : Presence of this in a transcription unit also defines the template and coding strands
Answer» Regulater Promoter TERMINATOR Operator Answer :B

Discussion

10004.	Question : Presence of tail in a human baby is an example of :
Answer» VESTIGIAL organ Adaptive radiation Natural selection ATAVISM SOLUTION :Atavism

Discussion

10005.	Question : Presence of tail in new born baby is an example of:
Answer» Atavism Vestigial organs Homology Analogy Answer :A

Discussion

10006.	Question : Appearance of ancestral characters in the new borns, such as tail, monstral face, gill slits, multiple mammae etc. are known as Or Presence of tail in a child is an example of
Answer» ATAVISM EVOLUTION CONVERGENT evolution MUTATION SOLUTION :Atavism

Discussion

10007.	Question : Presence of plants arranged into well defined vertical layers depending on their height can best seen best in
Answer» tropical savannah tropical rain FOREST grassland TEMPERATE forest SOLUTION :tropical rain forest

Discussion

10008.	Question : Presence of pollen kift is adaptation for
Answer» Ophiophily Ornithophily Entomophily Chiropterophily Answer :C

Discussion

10009.	Question : Presence of NaCl in body fluid indicates that life originated in
Answer» PRIMITIVE ocean Rain WATER lakes Salt solution All the above Answer :A

Discussion

10010.	Question : Presence of motile stage in life cycle & requirement of water as a medium to complete life cycle is diagnostic characters of :-
Answer» THALLOPHYTA BRYOPHYTA PTERIDOPHYTA Cryptogams Answer :D

Discussion

10011.	Question : Presence of more than two alleles for a gene in apopulation is referred as
Answer» MUTANT alleles Multiple alleles isoalles Pseudoalleles Answer :B

Discussion

10012.	Question : Presence of long neck and high forelimbs in giraffe can be best explained by:
Answer» Lamarckism Neodarwinism Neolamarckism Bottleneck effect Answer :B

Discussion

10013.	Question : presence of large amounts of nutrients in water cause excessive growth of plankton a)Name this process b) write the dangers caused by this process.
Answer» Solution :a)ALGAL bloom b) 1) Impactsa distinct colourto THEWATER bodies 2) Deterioration of the water QUALITY 3) Fish moratality 4) Toxicto human beingsand ANIMALS

Discussion

10014.	Question : Presenceof keystonespeciesand linkspeciesof plantsareessential for theexistenceof diversity of organisms .Justifythe followingstatementsbasedon this. a.Figtreeis a keystonespeciesof plantcommunity.b. Mycorrhizal fungi in soilas a linkspecies.
Answer» SOLUTION :a .Figtreeproduceslarge numberof fruitswhenthere is ascarcityof fruits . b. Mycorrhizahelpsthe PLANTSTO absorbnutrients from THESOIL. So it isconsideredas LINKSPECIES.

Discussion

10015.	Question : Presence of gill slits in the embryo of all vertebrates supports the theory of:
Answer» ORGANIC evolution Biogenesis Metamorphosis Recapitulation Answer :D

Discussion

10016.	Question : Presence of fats and chyme in the food causes duodenum to produce this polypeptide hormone
Answer» SECRETIN GASTRIC INHIBITORY peptide Gastrin Cholecystokinin Answer :D

Discussion

10017.	Question : Presence of compound eyes is the characteristics of featuresof phylum________.
Answer» ANSWER :ARTHROPODA,

Discussion

10018.	Question : presence of an additional copy of the chromosome number 21 is
Answer» down's Syndrome Turner's syndrome Klinefelter's Syndrome Phenylketonuria Answer :A

Discussion

10019.	Question : Highlight the protocol for production of virus free meristem tip culture.
Answer» SOLUTION :Protocol for virus free meristem tip culture `DARR` Apical meristem tip with 1or 2 leaf primordia are excised in STERILE condition from the explant `darr` In vitro culture in 10 ml of solid MS medium supplemented with GROWTH hormones `darr` Cultures are maintained at `24pm1^(@)C` in dark for 3 days followed by NORMAL illumination of 2400Lux `darr` Plantlets developed from meristem- tip culture after organogenesis process, transferred to hardening process `darr` Transferred to field condition

Discussion

10020.	Question : write the protocol for glyphosate tolerant potato plant .
Answer» Solution :`underset("DEVELOPMENT of HERBICIDE tolerant transgenic plants")underset(darr)underset("cellus"rarr"Organogenesis")underset(darr)OVERSET("Introduction of .bar. gene through vector")overset(darr)overset("CELL culture of POTATO with .bar. gene")overset(darr)overset("Herbicide tolerant potato cells")overset(darr)"In vitro culture"`

Discussion

10021.	Question : Prepare a pamphlet for an awareness programme in your school about the measures to prevent and control alcohol and drug abuse in adolescence.
Answer» Solution :Avoid undue peer pressure Education and COUNSELLING Seeking help from PARENTS and peers LOOKING for DANGER signs

Discussion

10022.	Question : Prepare a poster against smoking to exhibit in your school.
Answer» SOLUTION :

Discussion

10023.	Question :Prepare a flow chart showing the evolution of modern man in the hierarchial order of their evolution using the details given below: Homo erectus, Homo habilis, Dryopithecus, Australopithecines, Homo sapiens, Ramapithecus, Neanderthal man.
Answer» Solution :DRYOPITHECUS `RARR` RAMAPITHECUS `rarr` Australopithecines `rarr` Homo habilis `rarr` Homo erectus `rarr` NEANDERTHAL man `rarr` Homo sapiens

Discussion

10024.	Question : Preparation of sperm before entry into the ovum is called
Answer» Isemination MATURATION CAPACITATION FERTILIZATION ANSWER :C

Discussion

10025.	Question : Preparation of sperm before entry into the ovum is called :
Answer» Insemination Maturation Capacitation Fertilization ANSWER :C

Discussion

10026.	Question : Pregnancy in second trimester is maintained by ………………………..
Answer» LH (Lutenizing hormone) progesterone estrogen HCG (HUMAN CHORIONIC Gonadotropin) ANSWER :B

Discussion

10027.	Question : Predominant early antibody that first activates in primary immune response is
Answer» IgG IgA IgD IgM Answer :D

Discussion

10028.	Question : Prefoetal globin is
Answer» `zeta_(2)epsi_(2), alpha_(2)beta_(2), zeta_(2)gamma_(2)` `zeta_(2)epsi_(2), zeta_(2)gamma_(2), alpha_(2)beta_(2)` `zeta_(2)epsi_(2), zeta_(2)gamma_(2), alpha_(2)gamma_(2)` `alpha_(2)beta_(2), alpha_(2)del_(2), alpha_(2)gamma_(2)` SOLUTION :N//A

Discussion

10029.	Question : Prediction of the sequence of amino acids from the nucleotide sequence in mRNA is very easy but the exact predictions of the nucleotide sequence in mRNA from the sequence of amino acid coded by mRNA is difficult. Which property of the genetic code is the reason for the above condition ? Explain
Answer» Solution :Because same AMINO acid is coded by more than one CODONS - Degenracy. EXAMPLE - SERINE is coded by both UCU and UCC.

Discussion

10030.	Question : Which are the stop codons in DNA replication.
Answer» SOLUTION :The STOP codons are UAA, UGA and UAG.

Discussion

10031.	Question : Predict the following chart.
Answer» SEX LINKED RECESSIVE character Autosomal recessive character May be X-linked or autosomal Holandric inheritance Answer :B

Discussion

10032.	Question : Predators help in :
Answer» MAINTAINING SPECIES diversity Reduce the COMPETITION between PREY species Maintaining ECOLOGICAL balance All Answer :D

Discussion

10033.	Question : Predators help in:
Answer» Maintaining SPECIES diversity Reduce the COMPETION between prey species Maintaining ecological balance All Answer :D

Discussion

10034.	Question : Predators also help in maintaining species diversity in a community, by reducing the intensity of competition among competing prey species". Give an example.
Answer» Solution :(a) In the rocky INTERTIDAL communities of the American PACIFIC Coast the starfish Pisaster is an important PREDATOR. (B) In a field experiment, when all the starfish were removed from an enclosed intertidal AREA, more than 10 species of invertebrates became extinct within a year, because of inter-specific competition.

Discussion

10035.	Question : Predation and prasitism are which type of interaction ?
Answer» (+,+) (+,O) (-,-) (+,-) SOLUTION :(+,-)

Discussion

10036.	Question : Precursor of whichone of thefollowingvitamins comesfrom beta-carotene ?
Answer» Vitamin A Vitamin C Vitamin D Vitamin K Solution :The HUMAN body converts beta-caroteneinto vitamin A (RETINOL) - beta-carotene is a precursor of vitamin A.

Discussion

10037.	Question : Precursor of cytokinin is
Answer» A pyrimidine A purine Carotenoid Methionine Answer :B

Discussion

10038.	Question : Precipitation due to annual variation in seasons includes
Answer» Rain Snow DEW Both(A) and (B) ANSWER :D

Discussion

10039.	Question : Precentage of recessive phenotype in a cross between two hybrid is :
Answer» `25%` `50%` `75%` `100%` ANSWER :A

Discussion

10040.	Question : Precursor "mRNA"overset(A) rarrhnRNA
Answer» (a) CAPPING (B) TAILING (C) SPLICING (d) Transcribing Solution :Splicing

Discussion

10041.	Question : Pre-natal defects in the foetus can be detected by:LaparoscopyGenetic engineeringMRIAminocentesis
Answer» Laparoscopy Genetic engineering MRI Aminocentesis Answer :D

Discussion

10042.	Question : Pre-historic man who gave a proper burial to the dead for the first time was
Answer» PEKING man Java man Neanderthal man Cro-Magnon man Answer :C

Discussion

10043.	Question : Precambrain includes
Answer» SILURIAN and ORDOVICIAN CARBONIFEROUS and permian Jurassic and triassic Proterozoic and triassic Solution :N//A

Discussion

10044.	Question : Pre-fertilization events of sexual reproduction in all organisms are gametogenesis and gamete transfer. What are post-fertilization events?
Answer» SOLUTION :FORMATION of ZYGOTE EMBRYOGENESIS

Discussion

10045.	Question : Pre-erythrocytic cycle
Answer» ERYTHROCYTIC cycle Post-erythrocytic cycle Gamogony Answer :B

Discussion

10046.	Question : Pre caval : Superior vena cava Post caval: _________ .
Answer» SOLUTION :INFERIOR VENA CAVA

Discussion

10047.	Question : Praying mantis is a good example of:
Answer» SOCIAL insects camourflage mullerian mimicry warming colouration Answer :B

Discussion

10048.	Question : Praying mantis is a good example of
Answer» CAMOUFLAGE Mullerian mimcry Warning COLOURATION SOCIAL insects Answer :A

Discussion

10049.	Question : Prakash parked his car in bright sunlight for a few hours, with glass windows fully raised.After some time inside of the car was very hot.How can you correlate this phenomenon with global warming?
Answer» Solution :The green ghhouse effect is due to various green house gases,of which the percentage of carbon dioxide is very high.This CAUSES the increase of TEMPERATURE on EARTH called Golbal WARMING.

Discussion

10050.	Question : Prakash parked his car in bright sunlight for a few hours, with glass windows fully raised. After some time the car was very hot inside. How can you correlate this phenomenon with global warming?
Answer» SOLUTION :The GREENHOUSE GASES like `CO_2`, `N_2O`, CFCs and methane are responsible for greehouse effect in the atmosphere. The greenhouse gases allow the solar radiation to enter but prevent the escape of HEAT radiation of longer wave length. This keeps the surface of earht warm.

Discussion

Explore topic-wise InterviewSolutions in .

Question : presence of which hormone is diagnosed in Gravidex test?

Question : Presence of vessels in the xylem is

Question : Presence of this in a transcription unit also defines the template and coding strands

Question : Presence of tail in a human baby is an example of :

Question : Presence of tail in new born baby is an example of:

Question : Appearance of ancestral characters in the new borns, such as tail, monstral face, gill slits, multiple mammae etc. are known as Or Presence of tail in a child is an example of

Question : Presence of plants arranged into well defined vertical layers depending on their height can best seen best in

Question : Presence of pollen kift is adaptation for

Question : Presence of NaCl in body fluid indicates that life originated in

Question : Presence of motile stage in life cycle & requirement of water as a medium to complete life cycle is diagnostic characters of :-

Question : Presence of more than two alleles for a gene in apopulation is referred as

Question : Presence of long neck and high forelimbs in giraffe can be best explained by:

Question : presence of large amounts of nutrients in water cause excessive growth of plankton a)Name this process b) write the dangers caused by this process.

Question : Presenceof keystonespeciesand linkspeciesof plantsareessential for theexistenceof diversity of organisms .Justifythe followingstatementsbasedon this. a.Figtreeis a keystonespeciesof plantcommunity.b. Mycorrhizal fungi in soilas a linkspecies.

Question : Presence of gill slits in the embryo of all vertebrates supports the theory of:

Question : Presence of fats and chyme in the food causes duodenum to produce this polypeptide hormone

Question : Presence of compound eyes is the characteristics of featuresof phylum________.

Question : presence of an additional copy of the chromosome number 21 is

Question : Highlight the protocol for production of virus free meristem tip culture.

Question : write the protocol for glyphosate tolerant potato plant .

Question : Prepare a pamphlet for an awareness programme in your school about the measures to prevent and control alcohol and drug abuse in adolescence.

Question : Prepare a poster against smoking to exhibit in your school.

Question :Prepare a flow chart showing the evolution of modern man in the hierarchial order of their evolution using the details given below: Homo erectus, Homo habilis, Dryopithecus, Australopithecines, Homo sapiens, Ramapithecus, Neanderthal man.

Question : Preparation of sperm before entry into the ovum is called

Question : Preparation of sperm before entry into the ovum is called :

Question : Pregnancy in second trimester is maintained by ………………………..

Question : Predominant early antibody that first activates in primary immune response is

Question : Prefoetal globin is

Question : Which are the stop codons in DNA replication.

Question : Predict the following chart.

Question : Predators help in :

Question : Predators help in:

Question : Predators also help in maintaining species diversity in a community, by reducing the intensity of competition among competing prey species". Give an example.

Question : Predation and prasitism are which type of interaction ?

Question : Precursor of whichone of thefollowingvitamins comesfrom beta-carotene ?

Question : Precursor of cytokinin is

Question : Precipitation due to annual variation in seasons includes

Question : Precentage of recessive phenotype in a cross between two hybrid is :

Question : Precursor "mRNA"overset(A) rarrhnRNA

Question : Pre-natal defects in the foetus can be detected by:LaparoscopyGenetic engineeringMRIAminocentesis

Question : Pre-historic man who gave a proper burial to the dead for the first time was

Question : Precambrain includes

Question : Pre-fertilization events of sexual reproduction in all organisms are gametogenesis and gamete transfer. What are post-fertilization events?

Question : Pre-erythrocytic cycle

Question : Pre caval : Superior vena cava Post caval: _________ .

Question : Praying mantis is a good example of:

Question : Praying mantis is a good example of

Question : Prakash parked his car in bright sunlight for a few hours, with glass windows fully raised.After some time inside of the car was very hot.How can you correlate this phenomenon with global warming?

Question : Prakash parked his car in bright sunlight for a few hours, with glass windows fully raised. After some time the car was very hot inside. How can you correlate this phenomenon with global warming?