24277 + Interview Questions in Biology in Class 12 Page 433 InterviewSolution

21601.	Question : As we move from the polar region towards the equator, the biodiversity gradually……………………
Answer» DECREASES INCREASES Increases and decreases All the given Solution :Increases

Discussion

21602.	Question : As the earth started condensing which of the following passed to core of the earth?
Answer» SILICON ALUMINIUM Nickel All of these Answer :C

Discussion

21603.	Question : As the solute concentration in a solution increases, the change that does not occur is
Answer» `pi` is more negative `PSI` is more negative `pi` BECOMES more positive more influx of water Answer :C

Discussion

21604.	Question : As transgenic plants and animals produce warious useful substances, they are called living _________
Answer» ANSWER :D

Discussion

21605.	Question : As the Biological Oxygen demand increases
Answer» Oxygen DISSOLVED in WATER increases Oxygen dissolved in water decreases Oxygen dissolved in water remains the same Oxygen dissolved in water may increase or DECREASE depending on population of algae ANSWER :B

Discussion

21606.	Question : As succession proceeds the numbers and types of animals and decomposers also change. How?
Answer» Solution :Vegetation changes in turn CHAGE the food and SHELTER for various TYPES of animals. As a resultthe foresaid changes HAPPEN.

Discussion

21607.	Question : As the base sequence present on one strand of DNA decides the base sequence of other strand, this strand is considered as ………… .
Answer» DESCENDING strand Leading strand Lagging strand Complimentary strand Answer :D

Discussion

21608.	Question : As per theory of chemosynthetic generation, what was the sequence of origin of life?
Answer» AMINO ACIDS-Nucleoproteins_Chlorophyll Nucleoproteins-Amino acids- Chlorophyll Nucleoproteins- Chlorophyll-Amino acids Amino acids-Chlorophyll- Nucleoproteins Answer :A

Discussion

21609.	Question : As per the code of the nomenclature, which one of the following is the correct way of writing a biological name?
Answer» AMOEBA Proteus Amoeba proteus amoeba proteus Amoeba Proteus Answer :B

Discussion

21610.	Question : As per the human genome sequences, expression is …………………..
Answer» MESSENGER RNA DNA sequences ribosomes transfer - RNA SOLUTION :DNA sequences

Discussion

21611.	Question : As per one view by the end of 21st century, there will be a reduction by which rate in the biodiversity of the earth ?
Answer» `10%` `30%` `50%` `70%` SOLUTION :`50%`

Discussion

21612.	Question : As per Lyon's hypothesis one of the two x - chromosomes undergoes heterochromatisation and is called
Answer» BARR BODY Karyotypic body GENOTYPIC body PHENOTYPIC body Answer :A

Discussion

21613.	Question : As per Allen's rule which of the following statements is correct?
Answer» Limbs of HOMEOTHERMS of warmer regions of the EARTH are usually shorter than the homeotherms of COLDER regions Limbs of homeotherms of colder regions of the Earth are usually shorter than homeothrmsof warmer regions Limbs of poikilotherms of colder regions Limbs of poikilotherms of colder regions of the Earth are usually shorter than the poikilotherms of warmer regions Answer :B

Discussion

21614.	Question : As per chemiosmotic coupling hypothesis, in mitochondria, protons accumulate in the
Answer» OUTER MEMBRANE inner membrane INTERMEMBRANE space matrix ANSWER :C

Discussion

21615.	Question : As per 1991 census, sex ratio (females per 1,000 males) in India is :
Answer» 929 941 972 955 Answer :A

Discussion

21616.	Question : As most Bt toxins are insect group specific, so the choice of Bt genes depends upon :-
Answer» CROP targeted pest only crop (1) and (2) both Answer :D

Discussion

21617.	Question : As more than one triplet codon can specify one amino acid, the genetic code is called non-ambiguous.
Answer» True False Answer :DEGENERATE

Discussion

21618.	Question : As it passes into food chain, the concentration of DDT :
Answer» REMAINS same Decreases Increases Unpredicatable Answer :C

Discussion

21619.	Question : As horse evolved, there was progressive reduction in the number of toes. Which of the following is the correct sequence in the evolution of horse ?
Answer» Orophippus, Hyracotherium, Mesophippus, Callipus, Merychippus, Pliophippus, EQUUS Hyracotherium, Orophippus, Mesophippus, Merychippus, PLIOHIPPUS, Equus Orophippus, Callipus, hyracotherium, Mesophippus, Merychippus, Pliohippus, Equus Hyracotherium , Mesohippus, Orohippus , Gallipus, Merychippus, Pliohippus, and Equus ANSWER :B

Discussion

21620.	Question : As horse evolved, there was progressive reduction in number of toes. Which of the following is correct sequence in the evolution of horse?
Answer» Orohippus, Hyracotherium, Mesohippus, Callipus, Merychippus,PLIOHIPPUS,EQUUS Hyracotherium, Orohippus, Mesohippus, Merychippus,Pliohippus, Equus Orohippus,Callipus,Hyracotherium, Mesohippus,Merychippus, Pliohippus, Equus Hyracotheriu, Mesohippus, Orohippus, Callipus,Merychippus,Pliohippus and Equus. Answer :B

Discussion

21621.	Question : As compared to tap water B.O.D. of a polluted water with Sewage Waste would be:
Answer» Huge Low Equal None Answer :A

Discussion

21622.	Question : As compared to an adult male, the adult female has more
Answer» Fat Brain Connective TISSUE and other parts Muscles Answer :A

Discussion

21623.	Question : As compared to anaerobic respiration, the energy released during aerobic respiration is:
Answer» 8times 12 times 18 times 36 times Answer :C

Discussion

21624.	Question : As carbon dioxide produced in the tissues combines with water in the blood
Answer» carbonic in the BLOOD `CL^(-) ` enters in the RBCs most of the HCO_(3)^(-)`from the carbonic ACID leaves the RBCs for the blood plasma All of the precedings OCCUR Answer :D

Discussion

21625.	Question : As a september 2002, how many protected areas in India ?
Answer» 851 185 581 518 Solution :581

Discussion

21626.	Question : As altitude increases ..........
Answer» PRECIPITATION decreases Temperature INCREASES Snowing decreases Solution :`O_2` DENSITY increases

Discussion

21627.	Question : As a student of zoology how will you make the local people aware about the precautions to be taken to prevent the spread of vector-borne diseases like dengue and chikungunya.
Answer» Solution :ELIMINATE the VECTORS and their breeding PLACES Use mosquito nets Avoid stagnation of water in and around HOUSES. Introducing fishes like Gambusia that feed on mosquito larvae,

Discussion

21628.	Question : As a result of what type of breeding, absolutely new characters are seen in the offspring ?
Answer» INNER breeding Inbreeding INTERSPECIFIC HYBRIDIZATION Outbreeding SOLUTION : Interspecific hybridization

Discussion

21629.	Question : As a result of first cleavage, …….. Formed.
Answer» ONE CELL is two CELLS are three cells are four cells are Answer :B

Discussion

21630.	Question : As a part of adolescent health program, prepare a pamphlet showing common problems of adolescence with special reference to mental problems.
Answer» SOLUTION :Common problems of adolescence are ACNE, hypochondria, neurasthenia. schizophrenia, phobio, TENSION, anxiety and depression.

Discussion

21631.	Question : Artificially induced _____ are useful in hybridization programme.
Answer» ANSWER :MUTANTS

Discussion

21632.	Question : Artificial system of classification classifies plants on the basis of :-
Answer» One or TWO characters Phylogenetic TRENDS Many naturally existing characters None of these. Answer :A

Discussion

21633.	Question : Artificial selection to obtain cows yielding high milk output represents
Answer» STABILISING selection as it stabilises this Character in the POPULATION directional as it PUSHES the mean of the character in one direction disruptive as it splits the population into two, one yielding higher output and the other lower output stabilising FOLLOWED by disruptive as stabilises the population of PRODUCE higher yielding cows Solution :directional as it pushes the mean of the character in one direction

Discussion

21634.	Question : Artificial pacemaker is required during treatment of
Answer» CAD Myocardial infarction Cardiac arrhythmia Angina pectoris Answer :C

Discussion

21635.	Question : Artificial method of propagation where two different plants are joined together ……….. .
Answer» SOLUTION :GRAFTING

Discussion

21636.	Question : Artificial pacemaker is implanted when there is damage to
Answer» SA NODE AV node both SA node and AV nodes AV bundle Answer :C

Discussion

21637.	Question : Artificial labour can be induced by :
Answer» Oxytocin Prolactin Thyroxine Corticosterone Answer :A

Discussion

21638.	Question : Artificial insemination mean :
Answer» TRANSFER of sperms of husband to a test tube containing ova Artificial introduction of sperms of a HEALTHY donor into the VAGINA Introduction of sperms of a healthy donor directly into the ovary Transfer of sperms of a healthy donor to a test tube containing ova Answer :B

Discussion

21639.	Question : artificial insemination means
Answer» artificial introduction of sperms of a healthy DONOR into the vagina introduction of sperm of a healthy donor DIRECTLY into the ovary transfer of sperms of a healthy donor to a TEST TUBE containing ovary transfer of arms of husband to a test tube containing ova. Answer :D

Discussion

21640.	Question : 'Artificial insemination helps overcome several problems of normal mating in cattle''. Do you agree ? Support you answer with any three reasons.
Answer» Solution :Artificial insemination helps overcome several problems of normal mating in cattles. (i) The semen is COLLECTED from a chosen superior male and is injected into the reproductive tract of the selected female by the breeder. (ii) The semen may be used immediately or can be frozen and used at a LATER date. It can be transported in a frozen form to where the female cattle is KEPT. (III) On superior male can be used for impregnating hundreds of female in ONE semen ejaculate of male cattle.

Discussion

21641.	Question : Artificial insemination is used when
Answer» FALLOPIAN tube is BLOCKED in female Penis ERECTION dysfunction of male Female does not PRODUCE MATURE ovum All of these Answer :B

Discussion

21642.	Question : Artificial hybridisation is one of the major approaches of crop improvement programme
Answer» Solution :CROSSING different species and often genera to combine desirable characters to PRODUCE commercially superior VARIETIES are very important. For this only DESIRED pollen grains are used for POLLINATION and the stigma is protected from contamination. This is achieved by emasculation and bagging techniques

Discussion

21643.	Question : Artificial induction of roots on stems before it is separated from the parent plant for propagation is called
Answer» cutting grafting plant TISSUE CULTURE LAYERING

Discussion

21644.	Question : Artificial hybridisation is one of the major approaches for crop improvement programme. In such crosses it is important to avoid unwanted pollen. Explain how we can protect stigma from unwanted pollen.
Answer» SOLUTION :We can PROTECT stigma from unwanted POLLEN by emasculation and BAGGING

Discussion

21645.	Question : Artifical selection to obtain cows yieldinghigher milk output represents :
Answer» stabilizingselectionas it STABILIZES thischaracter in the population directionalas it pushes the MEAN of thecharacter in the population disroptive as it splitsthe populaitoninto , one yieldinghigheroutput and theotherlower output stabilizingfollowedby distruptiveas itstabilized the population to PRODUCE higheryielding cows. Answer :B

Discussion

21646.	Question : Write a note on artificial acquired active immunity.
Answer» Solution :(1)Arificial acquired active immunity is produced through vaccinations.(2)Vaccines are produced from dead or LIVE but attenuated pathogenes or toxoids that have microbial components SECRETED by the pathogenes.(4)E.g Vaccines of polio OPR BCG produce artifeid acquired active immunity.

Discussion

21647.	Question : Artificial ecosystems are characterised by
Answer» High productivity High DIVERSITY Complex food CHAINS more cycling of NUTRIENTS Answer :A

Discussion

21648.	Question : Arthropods and some Annelids have myogenic heart.
Answer» True False Answer :mayogenic

Discussion

21649.	Question : Arsenite dehdrogenase can block
Answer» Isocitrate`to``ALPHA`-ketoglutarate Malate`to`Oxaloacetarate Pyruvate`to`ACETYL Co-A Solution :NA

Discussion

21650.	Question :ART
Answer» SOLUTION : ASSISTED REPRODUCTIVE TECHNIQUE

Discussion

Explore topic-wise InterviewSolutions in .

Question : As we move from the polar region towards the equator, the biodiversity gradually……………………

Question : As the earth started condensing which of the following passed to core of the earth?

Question : As the solute concentration in a solution increases, the change that does not occur is

Question : As transgenic plants and animals produce warious useful substances, they are called living _________

Question : As the Biological Oxygen demand increases

Question : As succession proceeds the numbers and types of animals and decomposers also change. How?

Question : As the base sequence present on one strand of DNA decides the base sequence of other strand, this strand is considered as ………… .

Question : As per theory of chemosynthetic generation, what was the sequence of origin of life?

Question : As per the code of the nomenclature, which one of the following is the correct way of writing a biological name?

Question : As per the human genome sequences, expression is …………………..

Question : As per one view by the end of 21st century, there will be a reduction by which rate in the biodiversity of the earth ?

Question : As per Lyon's hypothesis one of the two x - chromosomes undergoes heterochromatisation and is called

Question : As per Allen's rule which of the following statements is correct?

Question : As per chemiosmotic coupling hypothesis, in mitochondria, protons accumulate in the

Question : As per 1991 census, sex ratio (females per 1,000 males) in India is :

Question : As most Bt toxins are insect group specific, so the choice of Bt genes depends upon :-

Question : As more than one triplet codon can specify one amino acid, the genetic code is called non-ambiguous.

Question : As it passes into food chain, the concentration of DDT :

Question : As horse evolved, there was progressive reduction in the number of toes. Which of the following is the correct sequence in the evolution of horse ?

Question : As horse evolved, there was progressive reduction in number of toes. Which of the following is correct sequence in the evolution of horse?

Question : As compared to tap water B.O.D. of a polluted water with Sewage Waste would be:

Question : As compared to an adult male, the adult female has more

Question : As compared to anaerobic respiration, the energy released during aerobic respiration is:

Question : As carbon dioxide produced in the tissues combines with water in the blood

Question : As a september 2002, how many protected areas in India ?

Question : As altitude increases ..........

Question : As a student of zoology how will you make the local people aware about the precautions to be taken to prevent the spread of vector-borne diseases like dengue and chikungunya.

Question : As a result of what type of breeding, absolutely new characters are seen in the offspring ?

Question : As a result of first cleavage, …….. Formed.

Question : As a part of adolescent health program, prepare a pamphlet showing common problems of adolescence with special reference to mental problems.

Question : Artificially induced _____ are useful in hybridization programme.

Question : Artificial system of classification classifies plants on the basis of :-

Question : Artificial selection to obtain cows yielding high milk output represents

Question : Artificial pacemaker is required during treatment of

Question : Artificial method of propagation where two different plants are joined together ……….. .

Question : Artificial pacemaker is implanted when there is damage to

Question : Artificial labour can be induced by :

Question : Artificial insemination mean :

Question : artificial insemination means

Question : 'Artificial insemination helps overcome several problems of normal mating in cattle''. Do you agree ? Support you answer with any three reasons.

Question : Artificial insemination is used when

Question : Artificial hybridisation is one of the major approaches of crop improvement programme

Question : Artificial induction of roots on stems before it is separated from the parent plant for propagation is called

Question : Artificial hybridisation is one of the major approaches for crop improvement programme. In such crosses it is important to avoid unwanted pollen. Explain how we can protect stigma from unwanted pollen.

Question : Artifical selection to obtain cows yieldinghigher milk output represents :

Question : Write a note on artificial acquired active immunity.

Question : Artificial ecosystems are characterised by

Question : Arthropods and some Annelids have myogenic heart.

Question : Arsenite dehdrogenase can block

Question :ART