24277 + Interview Questions in Biology in Class 12 Page 223 InterviewSolution

11101.	Question : On water availability , Kangaroo rats drink a lot of water.
Answer» ANSWER :FALSE

Discussion

11102.	Question : On the rocky sea coasts of Scotland larger and competitively superior barnacle is
Answer» CHTHAMALUS BALANUS Sacculina Daphnia Answer :B

Discussion

11103.	Question : On their activation JG cells secrete
Answer» ERYTHROPOIETIN CARBONIC anhydrase renin angiotensin ANSWER :C

Discussion

11104.	Question : On the primitive earth, polymers such as proteins and nucleic acids in aqueous suspension formed the spherical aggregates. These are called
Answer» primitosomes liposomes primitogens coacervates Answer :B

Discussion

11105.	Question : On the basis of various characteristics living organisms can be grouped into different taxa. This process of grouping is called :-
Answer» Classification Taxonomy Systematics Identification Answer :A

Discussion

11106.	Question : On the basis of origin write the various poultry breeds used in poultry.
Answer» SOLUTION :American plymouth ROCK, new Hampshire, Rhode ISLAND RED are exotic breeds while Brahma, Cochin, Langshan are Asiatic breeds. Mediterranean breed is leghorn while English breed is Australorp and Indian breeds are Chittagong, Assel, Brahma and Kadaknath.

Discussion

11107.	Question :On the basis of nature of maternal and foetal tissues, the types of placentae are: (1) Haemochorial placenta (2) Haemoendothelial placenta (3) Cotyledonary placenta (4) Deciduate placentaChoose the correct answers :
Answer» 1, 2, 3 are CORRECT 1 and 2 are correct 2 and 4 are correct 1 and 3 are correct Answer :B

Discussion

11108.	Question :On the basis of given statement,select the option whichonly correct statements. i)outcrossing often helps to overcome inbreeding depression ii) MOET involves enhancing ovulation by injecting oxytocin iii)many new animal breeds have been developed by cross-breading iv) hisadale is a new breed of goat developed in Punjab by crossing Bikaneri rams and Merino ewes
Answer» (i) and (III) (i), (II), (iii) and (IV) (i), (ii) and (iii) (ii) and (iv) ANSWER :A

Discussion

11109.	Question : On the basis of nature of maternal and foetal tissues, the types of placentae are I. Hemochorial placenta II. Hemoendothelial placenta III. Cotyledonary placenta IV. Deciduate placenta Choose the correct answers
Answer» I, II, III are correct I and II are correct II and IV are correct I, II and IV are correct Answer :B

Discussion

11110.	Question : On the basis of hereditary material, most closest relative of man is
Answer» CHIMPANZEE GORILLA orangutan gibbon Answer :A

Discussion

11111.	Question : On the basis of following diagram identify the correct direction of water movement :-
Answer» `AlarrB LARR C larr A` `A to B to C HARR D` `A larr B larr C hArr D` `A larr B to C larr D` ANSWER :C

Discussion

11112.	Question : On the basis of different shapes, bacteria are grouped under
Answer» 2 Categories 3 Categories 5 Categories 4 Categories Answer :D

Discussion

11113.	Question : On germination, moss spores produce
Answer» Theca Protonema Annulus Prothallus Answer :B

Discussion

11114.	Question : On hormonehelps in ripeningof fruits, whilethe othersitmulates closure of stomata. Theseare respectively.
Answer» ABA and AUXIN Ethylene and ABA ABA and Ethylene GA and ABA ANSWER :B

Discussion

11115.	Question : On earth, life exists in extreme and harsh conditions. Mention any two major biomes in India.
Answer» Solution :(I) Deciduous forest (II) TROPICAL rain forest (iii) DESERT (IV) Sea coast

Discussion

11116.	Question : On earth life exists even in extreme and harsh conditions. Mention any two major biomes in india.
Answer» SOLUTION :TROPICAL DECIDUOUS FOREST,RAIN forest

Discussion

11117.	Question : On development of endometrium the effect of increased amount of which hormone is done?
Answer» CORPUS Leuteum Progesterone PROSTAGLANDIN Oxytocin ANSWER :B

Discussion

11118.	Question : On analysis , a person'skaryotyperevealsan extraonechromosomeof twentyfirstpair. What does ths condition represents? Which typeof symptoms can be noticedin the person ?
Answer» SOLUTION :TRISOMY - 21 or Downsyndrome. Sympotoms- Mentalretardation, malformedears ,protruedtongue, MOUTH is constantlyopenstec .

Discussion

11119.	Question : On a trip to a zoo,you friend sees a Gorilla and remasls "you mean we descended from that animal" How would you respond to this remark about the relationship between Gorilla and Homosapiens?
Answer» Solution :BASED on STUDIES of the comparative size of the brain in GORILLA and in MAN it is evident that man MIGHT have originated from Gorilla.

Discussion

11120.	Question : On an average, about ____A___of blood pumped out by each ventricle in ____B____ is filtered by the kidneys per minute. choose the option which correctly filled the blanks labelled as A and B
Answer» ONE FIFTH(A),Cardiac CYCLE(B) One tenth(A),One minute(B) One fifth(A),One minute(B) One tenth(A),Cardiac cycle(B) Answer :C

Discussion

11121.	Question : On a planet from a distant galaxy, the pilot vehicle collected a sample of bacteria-like material. On analysis, it showed proteins having 30 types of mino acids while the DNA has 6 types of bases. In the genetic code, a sequence of how many bases should be serving as a codon?
Answer» 2 3 4 5 Answer :A

Discussion

11122.	Question :On a logarithmic scale the correct representation of species area relationship is represented bythe equation
Answer» ` LOG S = Log C - Z Log A` ` Log S= Log C +Z Log A` `Log A= Log C+ZLog S` `Log S= Log A+Z Log C` ANSWER :B

Discussion

11123.	Question : Omnis cellula e cellulae was proposed by_____
Answer» ANSWER :RUDOLF VIRCHOW

Discussion

11124.	Question : Omithophily takes place in :
Answer» Yellow FLOWER having nectaries Scented flower Flower with charming COLOUR MODIFIED corolla Answer :1

Discussion

11125.	Question : olution of which chamber has a lower solute potential?
Answer» ANSWER :CHAMBER B

Discussion

11126.	Question : Ornithophily refers to the pollination by which of the following ?
Answer» Insects Birds Snails Air ANSWER :B

Discussion

11127.	Question : Oldest cultivated fruit is:
Answer» APPLES and pears Coconut Mango Banana Solution :N//A

Discussion

11128.	Question : Okazaki fragments are formed on _____ strand of replicating DNA.
Answer» ANSWER :LAGGING

Discussion

11129.	Question : Okazaki fragments are associated with which phenomenon ?
Answer» Translation Replication of DNA Transcription Reverse transcription Answer :B

Discussion

11130.	Question : Okazaki fragments are joined in a correct sequence by
Answer» SOLUTION :DNA LIGASE

Discussion

11131.	Question : Okazaki fragments are
Answer» SHORT DNA fragments on the lagging STRAND short DNA fragments on the leading strand the RNA primers required for initiation of DNA synthesis the DNA fragment produced DUE to radiation action ANSWER :A

Discussion

11132.	Question : Okazaki fragments are :
Answer» RNA primers Short DNA FRAGMENTS on lagging strand Short DNA fragments on LEADING strand DNA FRAGMENT from radiation Answer :B

Discussion

11133.	Question : Okasaki fragments are
Answer» SHORT STRETCH of DNA long stretch of DNA joined DNA FRAGMENTS by ligase stretches of DNA in LEADING strand Answer :A

Discussion

11134.	Question : Offsprings resemble their parents but are not exactly like them. This is so, because of
Answer» Variation PRODUCED by CROSSING over at the time of gamete formation Variation produced by CHANCE and distribution of chromosomes to the two poles of meiosis-I Both (a) and (B) MINGLING of maternal and paternal characters Answer :C

Discussion

11135.	Question : Offsprings of which cross will be phenotypically & genotypically similar -
Answer» DD `×x` Dd DD `×x` dd DD `XX` Dd Ww `×x` Ww Answer :B

Discussion

11136.	Question : Offsprings formed due to sexual reproduction have better chances of survival.Why?
Answer» Solution :SEXUAL reproduction combines the CHARACTERS of two parents and introduces variaationwhich MAKE the offspring better in enviromental ADAPTION.

Discussion

11137.	Question : Why is the offspring formed by asexual reproduction referred to as a clone ?
Answer» SOLUTION :In asexual, reproduction only one parent is INVOLVED. It does not INVOLVE the FORMATION of gametes. It involves only mitosis. New individual PRODUCED are genetically similar to the parent and also to each other, as mitotic division produces no vaiations.

Discussion

11138.	Question : Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because. (A) Sexual reproduction is a lengthy process.(B) Gametes of parents have qualitatively different genetic composition.(C) Genetic material comes from parents of two different species.(D) Greater amount of DNA is involved in sexual reproduction.
Answer» SEXUAL reproduction is a LENGTHY PROCESS. Gametes of parents have qualitatively different genetic composition. Genetic material comes from parents of two different species. GREATER amount of DNA is involved in sexual reproduction. Solution :Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because gametes of parents have qualitatively different genetic composition (due to crossing over). In asexual reproduction only one PARENT is involved, so there is no chance of variation.

Discussion

11139.	Question : Offspring formed due to sexual reproduction have better chance of survival. Why? Is this statement always true?
Answer» Solution :The offspring formed due to sexual REPRODUCTION show variations due to crossing over during gametogenesis and random FUSION of GAMETES during fertilization. These useful variations produced in offspring help the ORGANISMS to adapt and survive. This statement is not always TRUE because somthimes these variations can lead to the death of the organisms.

Discussion

11140.	Question : Offset in water hyacinth are producted by
Answer» MITOTIC divisons Parthenocarpy Meiotic divisons Parthenogenesis Answer :A

Discussion

11141.	Question : Why offspring derived by asexual reproduction are called clones?
Answer» SOLUTION :In ASEXUAL reproduction, the off spring is MORPHOLOGICALLY and genetically identical to the PARENT and to each other. Hence it is called clone.

Discussion

11142.	Question :Of what is biogas made ?(A) Carbon monoxide, Methane and Hydrogen(B) Carbon dioxide, Methane and Hydrogen(C) Carbon dioxide, Ethane and Hydrogen(D) Carbon monoxide, Ethane and Hydrogen
Answer» Carbon monoxide, METHANE and HYDROGEN Carbon dioxide, Methane and Hydrogen Carbon dioxide, ETHANE and Hydrogen Carbon monoxide, Ethane and Hydrogen Solution : Carbon dioxide, Methane and Hydrogen

Discussion

11143.	Question :Of the total incident solar rediation the proportion of PAR is
Answer» about 60% LESS than 50% more than 80% about 70% ANSWER :B

Discussion

11144.	Question : Of the total incident solar radiation the proportion of PAR is :
Answer» About 70% About 60% LESS than 50% More than 50% ANSWER :D

Discussion

11145.	Question : Of the total incident solar radiation the proportion of PAR is
Answer» About 70% Aboul60% LESS than 50% More than 80% Answer :C

Discussion

11146.	Question : Of the four major causes for the loss of biodiversity (Alien species invasion, habitat loss and fragmentation, over-exploitation and co- extinctions) which according to you is the major cause for the loss of biodiversity ? Give reasons in support.
Answer» Solution :Habitat loss and fragmentation is the most important cause driving animals and plants to extinction. The most dramatic EXAMPLES of habitat loss come from tropical rain forests. Once covering more than 14 per cent of the earth.s land surface, these rain forests now cover no more than 6 per cent. They are being destroyed FAST. By the time you FINISH reading this CHAPTER, 1000 more hectares of rain forest would have been LOST. The Amazon rain forest (it is so huge that it is called the .lungs of the planet.) harbouring probably millions of species is being cut and cleared for cultivating soyabeans or for conversion to grasslands for raising beef cattle.

Discussion

11147.	Question : _____Of the following is not due to reflex action.
Answer» Salviation Blinking of EYE DUE to STRONG light Flexion due to NEEDLE pinch Secretion Answer :D

Discussion

11148.	Question : Ofthecells presentin thecoelomicfluidofearthworm, the mostnumerous and largestare
Answer» PHAGOCYTES mucocytes RBCs chloragogen CELLS ANSWER :A

Discussion

11149.	Question : Of all the environment factors which is the not influential indetermining the rate of transpiration ?
Answer» LIGHT Water Relative HUMIDITY of atmosphere Temperature Answer :C

Discussion

11150.	Question : Oestrous cyle is reported in
Answer» COWS and sheep humans and monkeys chimpanzees and gorillas none of these. Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : On water availability , Kangaroo rats drink a lot of water.

Question : On the rocky sea coasts of Scotland larger and competitively superior barnacle is

Question : On their activation JG cells secrete

Question : On the primitive earth, polymers such as proteins and nucleic acids in aqueous suspension formed the spherical aggregates. These are called

Question : On the basis of various characteristics living organisms can be grouped into different taxa. This process of grouping is called :-

Question : On the basis of origin write the various poultry breeds used in poultry.

Question :On the basis of nature of maternal and foetal tissues, the types of placentae are: (1) Haemochorial placenta (2) Haemoendothelial placenta (3) Cotyledonary placenta (4) Deciduate placentaChoose the correct answers :

Question : On the basis of nature of maternal and foetal tissues, the types of placentae are I. Hemochorial placenta II. Hemoendothelial placenta III. Cotyledonary placenta IV. Deciduate placenta Choose the correct answers

Question : On the basis of hereditary material, most closest relative of man is

Question : On the basis of following diagram identify the correct direction of water movement :-

Question : On the basis of different shapes, bacteria are grouped under

Question : On germination, moss spores produce

Question : On hormonehelps in ripeningof fruits, whilethe othersitmulates closure of stomata. Theseare respectively.

Question : On earth, life exists in extreme and harsh conditions. Mention any two major biomes in India.

Question : On earth life exists even in extreme and harsh conditions. Mention any two major biomes in india.

Question : On development of endometrium the effect of increased amount of which hormone is done?

Question : On analysis , a person'skaryotyperevealsan extraonechromosomeof twentyfirstpair. What does ths condition represents? Which typeof symptoms can be noticedin the person ?

Question : On a trip to a zoo,you friend sees a Gorilla and remasls "you mean we descended from that animal" How would you respond to this remark about the relationship between Gorilla and Homosapiens?

Question : On an average, about ____A___of blood pumped out by each ventricle in ____B____ is filtered by the kidneys per minute. choose the option which correctly filled the blanks labelled as A and B

Question : On a planet from a distant galaxy, the pilot vehicle collected a sample of bacteria-like material. On analysis, it showed proteins having 30 types of mino acids while the DNA has 6 types of bases. In the genetic code, a sequence of how many bases should be serving as a codon?

Question :On a logarithmic scale the correct representation of species area relationship is represented bythe equation

Question : Omnis cellula e cellulae was proposed by_____

Question : Omithophily takes place in :

Question : olution of which chamber has a lower solute potential?

Question : Ornithophily refers to the pollination by which of the following ?

Question : Oldest cultivated fruit is:

Question : Okazaki fragments are formed on _____ strand of replicating DNA.

Question : Okazaki fragments are associated with which phenomenon ?

Question : Okazaki fragments are joined in a correct sequence by

Question : Okazaki fragments are

Question : Okazaki fragments are :

Question : Okasaki fragments are

Question : Offsprings resemble their parents but are not exactly like them. This is so, because of

Question : Offsprings of which cross will be phenotypically & genotypically similar -

Question : Offsprings formed due to sexual reproduction have better chances of survival.Why?

Question : Why is the offspring formed by asexual reproduction referred to as a clone ?

Question : Offspring formed due to sexual reproduction have better chance of survival. Why? Is this statement always true?

Question : Offset in water hyacinth are producted by

Question : Why offspring derived by asexual reproduction are called clones?

Question :Of what is biogas made ?(A) Carbon monoxide, Methane and Hydrogen(B) Carbon dioxide, Methane and Hydrogen(C) Carbon dioxide, Ethane and Hydrogen(D) Carbon monoxide, Ethane and Hydrogen

Question :Of the total incident solar rediation the proportion of PAR is

Question : Of the total incident solar radiation the proportion of PAR is :

Question : Of the total incident solar radiation the proportion of PAR is

Question : Of the four major causes for the loss of biodiversity (Alien species invasion, habitat loss and fragmentation, over-exploitation and co- extinctions) which according to you is the major cause for the loss of biodiversity ? Give reasons in support.

Question : _____Of the following is not due to reflex action.

Question : Ofthecells presentin thecoelomicfluidofearthworm, the mostnumerous and largestare

Question : Of all the environment factors which is the not influential indetermining the rate of transpiration ?

Question : Oestrous cyle is reported in

Question : On an average, about __A_of blood pumped out by each ventricle in B is filtered by the kidneys per minute. choose the option which correctly filled the blanks labelled as A and B