24277 + Interview Questions in Biology in Class 12 Page 312 InterviewSolution

15551.	Question : In monocot stem ( a ) Vascular bundles are scattered. ( b ) Hypodermis is sclerenchymatous. ( c ) Endodermis is well developed. ( d ) Stele is atactostele.
Answer» Only ( a ) & ( B ) are CORRECT Only ( C ) & ( d ) are correct Only ( c ) is incorrect All ( a ), ( b ), ( c ) & ( d ) are correct Answer :D

Discussion

15552.	Question : In monocot seeds the plumule is protected by a covered sheath called :
Answer» Hilum Tegmen Coleorhiza Coleoptile Answer :D

Discussion

15553.	Question : In monocot root vascular bundle is
Answer» TETRARCH and exarch Tetrarch and endarch Polyarch and exarch Polyarch and endarch Answer :C

Discussion

15554.	Question : In monocot roots, root cap is formed by the activity of ?
Answer» DERMATOGEN and Periblem Calyptrogen and Plerome Only Dermatogen Only Calyptrogen. Answer :D

Discussion

15555.	Question : In molluscs, head and foot regions have come together in
Answer» Scaphopodas Pelecypods Siphonopods Both A and B Solution :N//A

Discussion

15556.	Question : In mitosis, the spindle is :-
Answer» BIPOLAR MULTIPOLAR Apolar Random Answer :A

Discussion

15557.	Question : In Mirabilis jalapa when a red variety is crossed with a whife variety the offspring resulting from this cross is ……….. .
Answer» red white pink purple Answer :C

Discussion

15558.	Question : In mitochondria, protons accumulate in the:
Answer» OUTER membrane Inner membrane Intermembrane space Matrix Answer :C

Discussion

15559.	Question : In Mirabilis jalapa, the percentage of plants having pink and red flowers would be .............. when pink flower plant is test crossed.
Answer» 25% PINK & 25% red 50% pink & 50% red 50% pink & 0% red 0% pink & 50% red Answer :C

Discussion

15560.	Question : In Mirabilis jalapa red and white flowers are crossed, what can be phenotype and genotype of F_2 generation ?
Answer» A. 1:2:1 and 3:1 B. 3:1 and 1:2:1 C. 1:2:1 and 1:2:1 D.9:3 : 4 and 3 : 1 SOLUTION :1:2:1 and 1:2:1

Discussion

15561.	Question : In Mirabilies jalapa when two F_(1) pink flowered plants were corossed with each other, the F_(2) generation produced 40 red, 80 pink and 40 white flowering plants. This is a case of
Answer» DUPLICATE genes Lethal genes Incomplete dominance Epistasis Answer :C

Discussion

15562.	Question :In Mirabilis , a hybrid for red ( RR ) and white ( rr ) flower produces pink ( Rr ) flower . A plant with pink flower crossed with white flower , the expected phenotypic ratio is :
Answer» `RED : PINK : white ( 1 : 2 : 1 )` `Pink : white ( 1 : 1 )` `red : pink ( 1 : 1 )` `red : white ( 3 : 1 )` Answer :B

Discussion

15563.	Question : In Minosa pudica the placentation is
Answer» BASAL Marginal Parietal Axile Answer :B

Discussion

15564.	Question : In mid 1960as a result of various plant breeding techniques , there was a drastic increases in food production in our country .This phase is often reffered as …...........
Answer» ANSWER :Biofrtification

Discussion

15565.	Question : In mid 1960-s, as a result of various plant breeding techniques, there was a drastic increase in food production in our country. This phase is often referred as ..............
Answer» SOLUTION :GREEN REVOLUTION

Discussion

15566.	Question : In miaze, coloured endosperm ltCgt is dominant over colourless (c) and full endosperm (s) is dominant over shrunken (s). When a dihybrid of F1 - generation was test crossed, it produced four phenotypes in the following per centage. Coloured full 48% , coloured shrunken 5% colourless full 7% , colourless shrunken 48%. From this data, what would be the ddistance between the two non-allelic genes?
Answer» 48 units 12 units 7 units 5 UNTIS ANSWER :B

Discussion

15567.	Question : In microporangium, microspore tetrad are formed due to
Answer» formation of CALLOSE wall formation of pectin wall formation of SPOROPOLLENIN wall formation of POLLEN kit Solution :NA

Discussion

15568.	Question : In metropolitan cities, the automobiles causes air polution
Answer» 0.8 0.6 0.5 1 Answer :A

Discussion

15569.	Question : In microbial genetics which one is reffered to as ''Griffith effect''?
Answer» Conjugation transduction Transformation Sex-duction Answer :C

Discussion

15570.	Question : In Metaphase I, from each centromere of a chromosome, how many chromosomal fibres (Tractile fibres) arise towards poles ?
Answer» 2 1 `4-20` 4 Answer :B

Discussion

15571.	Question : In mesophyll cells at high light intensity chloroplasts are found
Answer» Scattered in the cell SAP Aligned AROUND the nucleus Aligned along the WALLS CLUSTERED in the cell Answer :C

Discussion

15572.	Question : In metropolitan cities air pollution is mainly due to :
Answer» BURNING of FOSSIL fuel Thermal POWER plants Sewage SUSPENDED particles Answer :A

Discussion

15573.	Question : In Mendel's breeding experiment on garden pea, the offspring of F_2 generation are obtained in the ratio of 25% pure yellow pod, 50% hybrid green pods and 25% green pods State (i) which pod colour is dominant (ii) The Phenotypes of the individuals of F_1 generation, (iii) Workout the cross.
Answer» SOLUTION :

Discussion

15574.	Question : In mendel's experiments with gardenpea , round seed shape (RR) was dominant over wrinkled seeds (rr) ,yellow cotyledon (YY) was dominant over green cotyledon (yy) . What are the expected phenotypes in the F_2 generation of the cross RRYY x rryy ?
Answer» ROUND seeds with YELLOW cotyledons, and WRINKLED seeds with green cotyledons Only round seeds with green cotyledons Only wrinkled seeds with yellow cotyledons Only wrikled seeds with green cotyledons Answer :A

Discussion

15575.	Question : In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds(r ), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F_(1) generation of the cross RRYYxxrryy ?
Answer» Only round SEEDS with GREEN COTYLEDONS Only wrinkled seeds with yellow cotyledons Only wrinkled seeds with greencotyledons Round seeds with yellow cotyledons an wrinkled seeds with yellow cotyledons Answer :D

Discussion

15576.	Question : In Mendel's experiment, the contrasing traits
Answer» showed belending at `F_(1)` STAGE Shwed blending at `F_(2)` stage Did not show any blending at EITHER `F_(1)` or `F_(2)` stage Showed blending ATBOTH `F_(1)`and `F_(2)`stage Answer :C

Discussion

15577.	Question : In meiosis the chromosomes replicate during:
Answer» Prophase Metaphase Anaphase Interphase Answer :D

Discussion

15578.	Question : In meiosis the chromosomes first start pairing during:
Answer» Interphase Prophase-1 Metaphase-II Metaphase-1 Answer :B

Discussion

15579.	Question : In meiosis synapsis occurs during:
Answer» interphase prophase S-phase Lepotene Answer :B

Discussion

15580.	Question : In meiosis, how many cycles of chromosome divison occures?
Answer» ONE Four Two Three Answer :A

Discussion

15581.	Question : In meiosis haploid condition is reached during _____ stage.
Answer» ANSWER :Anaphase-I

Discussion

15582.	Question : In medullated nerve fibre, node of Ranvier represent areas
Answer» SWELLING on axon Myelin SHEATH TOUCHES axon Swelling on cyton Depression FOUND on cyton Answer :B

Discussion

15583.	Question : In Medelism, linkage was not observed due to
Answer» Synapsis Independent assortment Mutation Crossing over Answer :B

Discussion

15584.	Question : In medieval physiology, it was considered that black bile is the humor secreted by kidneys or spleen and it cause melancholy (feeling of sadness which lasts for a long time). Actually black bile was hypothetical fluid. Who disproved “Good homor” hypothesis ?
Answer» HIPPOCRATES and Galen Indian AYURVEDA SYSTEM of medicine Willian Harvey Early Greeks Answer :C

Discussion

15585.	Question : In market, seedless grapes are high priced than seeded grapes. Give the method used to develop this by farmer.
Answer» SOLUTION :The seedless GRAPES are developed through INDUCED PARTHENOCARPY

Discussion

15586.	Question : In marine water ecosystem most of the energy in flows through :
Answer» Grazing FOOD CHAIN PARASITIC food chain Detritus food chain (2) and (3) both Answer :A

Discussion

15587.	Question : In market tablets of pollen are available for …..
Answer» For FERTILISATION in laboratory For BREEDING programme Supplement to food Maintences of NEW location Answer :C

Discussion

15588.	Question : In Marchantia male and female thallus are separate. This condition is called
Answer» Dioecious Hermaphrodite monoecious Bisexual Answer :A

Discussion

15589.	Question : In Marchantia and Riccia, Antheridia and Archegonia are produced on - and - thalli respectively.
Answer» same, same same, different different, same different, different Answer :C

Discussion

15590.	Question : In marathon race, what is inajor source of energy to leg muscle?
Answer» Lactate Oxidative METABOLISM Pyruvate Anaerobic RESPIRATION ANSWER :B

Discussion

15591.	Question : In many grasses, seeds are formed only after fertilization. There are reports that, in some grasses seeds are formed without fertilization. Explain the phenomenon
Answer» SOLUTION :APOMIXIS. Here embryo develops from an UNUSUAL diploid egg or from a cell other than egg in the embryo sac without FERTILIZATION.

Discussion

15592.	Question : The process where seeds are formed without fertilization is called?
Answer» Solution :Seeds are formed WITHOUT FERTILIZATION. This phenomenon is called apomixis. It is an asexual reproduction but mimics sexual reproduction. APOMICTIC seeds are formed by A DIPLOID egg CELL may develop into an emryo without fertilization. Cells of the nucellus surrounding the embryo sac may develop into embryos and become pushed into the embryo sac.

Discussion

15593.	Question : In many cells ribosomes occur in chains along messenger RNA. What is the advantage of this arrangement as compared to a situation in which ribosomes occur singly?
Answer» A greater variety of POLYPEPTIDES can be produced Polypeptides can be produced more rapidly Fewer RNA molecules are used in PROTEIN synthesis The probability of GENE MUTATION occurring is less Answer :B

Discussion

15594.	Question : In man , what is the condition called , in whom the testis fails to descend into scrotal sac ?
Answer» ANSWER :CRYPTORCHIDISM

Discussion

15595.	Question : In man urea is formed in _____.
Answer» ANSWER :LIVER

Discussion

15596.	Question : In man the vestigial third eyelid is called:
Answer» UPPER eyelid Nictitating membrane Lower eyelid Plica semilunaris Answer :D

Discussion

15597.	Question : In man , the blue eye colour is recessive to the brown eye colour . If the boy has brown eye and his mother is blue eyed, what would be the phenotype of his father ?
Answer» BLACK eye Brown eye Green eye Blue eye Answer :B

Discussion

15598.	Question : In man pH of saliva varies from:
Answer» 8-10 7.5 to 8 7.5 to 9 6.7 to 7.2 Answer :D

Discussion

15599.	Question : In man brown eyes (B) are dominant to blue (b) and dark hairs (R) dominant to red hairs (r). A man with brown eyes and dark hairs marries a woman with blue eyes & dark hairs. They have one child with blue eyes and red hairs, what will be possible genotype of man, woman and child respectively?
Answer» BBRR, bbRR, bbrr BBRr, bbRr, bbrr BbRr, bbRr, bbrr BbRR, bbRR, bbRr Answer :C

Discussion

15600.	Question : In man, brown eyes (B) are dominant over blue (b) and dark hair (D) dominant over red hair (d). A man with brown eyes and red hair marries a woman with blue eyes and dark hair. They got two children, one resembling the man and other the woman, genotypes of the man and woman were
Answer» BBdd,bbDD Bbdd,bbDd BBdd,bbDd Bbdd,bbDD Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : In monocot stem ( a ) Vascular bundles are scattered. ( b ) Hypodermis is sclerenchymatous. ( c ) Endodermis is well developed. ( d ) Stele is atactostele.

Question : In monocot seeds the plumule is protected by a covered sheath called :

Question : In monocot root vascular bundle is

Question : In monocot roots, root cap is formed by the activity of ?

Question : In molluscs, head and foot regions have come together in

Question : In mitosis, the spindle is :-

Question : In Mirabilis jalapa when a red variety is crossed with a whife variety the offspring resulting from this cross is ……….. .

Question : In mitochondria, protons accumulate in the:

Question : In Mirabilis jalapa, the percentage of plants having pink and red flowers would be .............. when pink flower plant is test crossed.

Question : In Mirabilis jalapa red and white flowers are crossed, what can be phenotype and genotype of F_2 generation ?

Question : In Mirabilies jalapa when two F_(1) pink flowered plants were corossed with each other, the F_(2) generation produced 40 red, 80 pink and 40 white flowering plants. This is a case of

Question :In Mirabilis , a hybrid for red ( RR ) and white ( rr ) flower produces pink ( Rr ) flower . A plant with pink flower crossed with white flower , the expected phenotypic ratio is :

Question : In Minosa pudica the placentation is

Question : In mid 1960as a result of various plant breeding techniques , there was a drastic increases in food production in our country .This phase is often reffered as …...........

Question : In mid 1960-s, as a result of various plant breeding techniques, there was a drastic increase in food production in our country. This phase is often referred as ..............

Question : In microporangium, microspore tetrad are formed due to

Question : In metropolitan cities, the automobiles causes air polution

Question : In microbial genetics which one is reffered to as ''Griffith effect''?

Question : In Metaphase I, from each centromere of a chromosome, how many chromosomal fibres (Tractile fibres) arise towards poles ?

Question : In mesophyll cells at high light intensity chloroplasts are found

Question : In metropolitan cities air pollution is mainly due to :

Question : In mendel's experiments with gardenpea , round seed shape (RR) was dominant over wrinkled seeds (rr) ,yellow cotyledon (YY) was dominant over green cotyledon (yy) . What are the expected phenotypes in the F_2 generation of the cross RRYY x rryy ?

Question : In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds(r ), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F_(1) generation of the cross RRYYxxrryy ?

Question : In Mendel's experiment, the contrasing traits

Question : In meiosis the chromosomes replicate during:

Question : In meiosis the chromosomes first start pairing during:

Question : In meiosis synapsis occurs during:

Question : In meiosis, how many cycles of chromosome divison occures?

Question : In meiosis haploid condition is reached during _____ stage.

Question : In medullated nerve fibre, node of Ranvier represent areas

Question : In Medelism, linkage was not observed due to

Question : In medieval physiology, it was considered that black bile is the humor secreted by kidneys or spleen and it cause melancholy (feeling of sadness which lasts for a long time). Actually black bile was hypothetical fluid. Who disproved “Good homor” hypothesis ?

Question : In market, seedless grapes are high priced than seeded grapes. Give the method used to develop this by farmer.

Question : In marine water ecosystem most of the energy in flows through :

Question : In market tablets of pollen are available for …..

Question : In Marchantia male and female thallus are separate. This condition is called

Question : In Marchantia and Riccia, Antheridia and Archegonia are produced on - and - thalli respectively.

Question : In marathon race, what is inajor source of energy to leg muscle?

Question : In many grasses, seeds are formed only after fertilization. There are reports that, in some grasses seeds are formed without fertilization. Explain the phenomenon

Question : The process where seeds are formed without fertilization is called?

Question : In many cells ribosomes occur in chains along messenger RNA. What is the advantage of this arrangement as compared to a situation in which ribosomes occur singly?

Question : In man , what is the condition called , in whom the testis fails to descend into scrotal sac ?

Question : In man urea is formed in _____.

Question : In man the vestigial third eyelid is called:

Question : In man , the blue eye colour is recessive to the brown eye colour . If the boy has brown eye and his mother is blue eyed, what would be the phenotype of his father ?

Question : In man pH of saliva varies from:

Question : In man, brown eyes (B) are dominant over blue (b) and dark hair (D) dominant over red hair (d). A man with brown eyes and red hair marries a woman with blue eyes and dark hair. They got two children, one resembling the man and other the woman, genotypes of the man and woman were