24277 + Interview Questions in Biology in Class 12 Page 418 InterviewSolution

20851.	Question : Asssertion: A geneticist crossed two plants. He got 50% tall and 50% dwarf plants in the progeny. Reason: One parent was heterozygous tall while the other was dwarf.
Answer» SOLUTION :

Discussion

20852.	Question : Association of animals when both partners are benefited is :
Answer» Commensalism AMENSALISM MUTUALISM PARASITISM Answer :C

Discussion

20853.	Question : Assume that a cross over and resulting chiasma occurred between two gene loci 100% of the time. What would be the per centage of recombinant chromosomes among the progeny?
Answer» 1 0.5 0.25 0.75 Answer :B

Discussion

20854.	Question : Association areas of cerebral cortex are
Answer» PURELY SENSORY purely motor NEITHER CLEARLY sensory nor motor absnent Answer :C

Discussion

20855.	Question : Associated symbiosis is shown by:
Answer» Rhizobium Erankia Azospirillium BOTH (A) AND (B) ANSWER :D

Discussion

20856.	Question : Assisted reproductive technology, IVF involves transfer of:
Answer» OVUM into the fallopian TUBE zygote into the fallopian tube zygoteinto the uterus embryo with 16 BLASTOMERES into the fallopian tube Answer :B

Discussion

20857.	Question : Assisted reproductive technologies (ART)
Answer» INCLUDE social awareness programme to EDUCATE PEOPLE about reproductive health Include research centre for birth control. Include a number of special techniques which assist infertile couples to have children. Both A and B Answer :C

Discussion

20858.	Question :Assisted reproductive method like IVF, is associated with transport of what?
Answer» Ovom in fallopian tube Embryo in fallopian tube Embryo (ZYGOTE) in UTERUS Embryo having 16 cells in fallopian tube Answer :B

Discussion

20859.	Question : Assetion Number of chromosomes in one genome is equal to nukber of linkage goups Reason Linkage groups give important information about the location of genes in the chromosomes
Answer» A B C D Answer :B

Discussion

20860.	Question : Assigning a '+' sign for beneficial interaction, '-' sign for detrimental and '0' for neutral interaction, outcomes of competition can be represented as:
Answer» `+ +` `- -` `- 0` `+ -` ANSWER :B

Discussion

20861.	Question : Assimilatory power required to produce one molecule of glucose through C_3 cycle in C_3 plants is
Answer» 6 ATP & 9 NADPH 30 ATP & 18 NADPH 18 NADPH & 12 ATP 18 ATP & 12 NADPH Answer :D

Discussion

20862.	Question : Assisted productive technology IVF involves transfer of
Answer» zygote into uterus embryo with 16 BLASTOMERES into the FALLOPIAN tube ovum into the fallopian tube zygote into the fallopian tube ANSWER :D

Discussion

20863.	Question : Assertlon:-Racemose inflorescence is unlimited type of inflorescence. Reason :-In Racemose inflorescence flowers arranged in acropetal manner.
Answer» If both Assertion & REASON are True & the Reason is a CORRECT EXPLANATION of the Assertion. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. If Assertion is True but the Reason is FALSE If both Assertion & Reason are false Answer :B

Discussion

20864.	Question : Assertion.Two chromatids remain held together as one point called centromer. Reason.Chromosome is double at tall points along its length excluding centromere.
Answer» If both ASSERTION and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20865.	Question : Assertion:The Y chromosome is called androsome Reason:X and Y chromosome differ in form and size.
Answer» If both ASSERTION and Reason are TRUE but Reason is not a CORRECT explanation of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

20866.	Question : Assertion:The short legged sheep breed true. Reason.They appeared by mutation in one generation.
Answer» If both ASSERTION and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20867.	Question : Assertion:The progeny of pureline varieties aresimilar in genotype and phenotype. Reason:They are raised by self fertilization .
Answer» Both Assertion andReason are TRUE and REASON is correct explanation of Assertion. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion Assertion is true but Reason is false Both Assertion and Reason are false. Solution :(a)Both Assertion and Reason are true and Reason is correct explanation of Assertion

Discussion

20868.	Question : Assertion:sex of the baby depends on human male . Reason :They are homogametic.
Answer» Both ASSERTION and reason are TRUE and reason is not the CORRECT explanation of assertion. Both assertion and reason are true but Reason is not the correct explanation of Assertion. Assertion is true Reason is false. Both Assertion and Reason are false. Solution :Assertion is true but Reason is FLASE

Discussion

20869.	Question : Assertion:Speciation is not likely to occur simply by changes in the genotype of a population. Reason:Natural selection really means differential reproduction
Answer» If both ASSERTION and REASON are true and Reason is the CORRECT EXPLANATION of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is false. If both Assertion and Reason are false Answer :B

Discussion

20870.	Question : Assertion:Progeny of pure line is heterozygous. Reson.It is a dihybrid cross.
Answer» If both ASSERTION and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20871.	Question : Assertion:Ratio of complementary genes is 9:7. Reason.Ratio of supplementary genes is 9:3:4
Answer» If both Assertion and REASON are TRUE but Reason is not a correct EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

20872.	Question : Assertion:Progeny of pure line is heterozygous. Reason.Pure lines are not the progeny of homozygous organisms
Answer» If both ASSERTION and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :D

Discussion

20873.	Question : Assertion:Persons of AB blood group are universal acceptors because reason : They can receive blood from persons of all blood groups
Answer» Both Assertion and Reason are true and Reason is the correct EXPLANATION of Assertion Both Assertion and Reason are true but Reason is not a correct explanation of Assertion Assertion is true but Reason is FALSE Assertion is false but Reason is true ANSWER :B

Discussion

20874.	Question : Assertion:Over exposure to sun tans the skin in human beings. Reason:In epidermal cells melanin appear and saves the skin from UV rays of sun.
Answer» If both ASSERTION and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20875.	Question : Assertion:Mendel successfully formulated the laws of heredity. Reaso.Mendel did not perfomr the study of one character at a time.
Answer» If both Assertion and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

20876.	Question : Assertion:Multiple genes are group of genes located at different loci and involved in the expression of one character they also called cumulative genes. Reason.Cumulative gene control colour of wheat kernel,skin colour In humans and height in man
Answer» If both ASSERTION and Reason are TRUE but Reason is not a correct EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

20877.	Question : Assertion:Malaria can be Contained with the introduction of larvicidal fish , Gambusia, in ponds, tanks and pubbles Reason : Gambusia is highly specific in devouring larvas of female anopheles mosquitoes
Answer» Both Assertion and REASON are true and Reason is the CORRECT EXPLANATION of Assertion Both Assertion and Reason are true but Reason is not a correct explanation of Assertion Assertion is true but Reason is false Assertion is false but Reason is true Answer :C

Discussion

20878.	Question : Assertion:Interspecific mating often produce a more vigorous but sterile F_1 hybrids . Reason:Reproductive isolation does not let evolution to occur.
Answer» If both ASSERTION and Reason are true and Reason is the CORRECT EXPLANATION of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is FALSE. If both Assertion and Reason are false Answer :C

Discussion

20879.	Question : Assertion:Lamarck's theory of organic evolution states that use and disuse of organs and environment cause inheritable variations. Reason: The modern theory of evolution is called Neo-Darwinism.
Answer» If both ASSERTION and Reason are TRUE and Reason is the CORRECT explanation of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is false. If both Assertion and Reason are false Answer :B

Discussion

20880.	Question : Assertion:Isolation checks inbreeding among the otherwise potential mates Reason: This preserves variations which can lead to speciation (evolution)
Answer» If both Assertion and Reason are true and Reason is the CORRECT explanation of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is FALSE. If both Assertion and Reason are false ANSWER :A

Discussion

20881.	Question : Assertion:Insecticides and antibiotics remain effective for an unlimited period Reason:Organisms never lose sensitivity to insecticides and antibiotics
Answer» If both Assertion and REASON are TRUE and Reason is the correct EXPLANATION of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is FALSE. If both Assertion and Reason are false Answer :D

Discussion

20882.	Question : Assertion:Insects visit flowers to gather honey.Reason:Coconut fruit can float and get dispersed over thaousands of kilometersbefore losing viability.
Answer» If both assertion and reason are true and reason is the correct explaination of assertion If both assertion and reason are true but reason is not correct explaination of assertion If assertion is true but reason is false If both assertion and reason are false. Solution :Inseet VISIT flowers to ger nectar.Nactar is CONTAINED in a special gland called nectary and sometimes in a special structural called spur.The attraction of flower in PLANTS is not to divaerge the inseet from damaging other part,but to bring about pollination(i.e. transfer of pollen to the stigma).The polen grains in insect pollinated flowers are either sticky or provided with spinous outgrowths.The stigma is ALSO stickly.Insect often visit these flower for nectar and inevidently bring about pollination.

Discussion

20883.	Question : Assertion:In eukaryotic chromosome,DNA is a long double stranded and linear. Reason:The eukaryotic chromosome are composed of DNA ,protiens ,RNA ,metal ions and enzymes.
Answer» If both Assertion and REASON are TRUE but Reason is not a correct EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

20884.	Question : Assertion:Human is not suitable for breeding experiments to investigate the human traits. Reason:X and Y chromosomes differ in form and size.
Answer» If both Assertion and Reason are TRUE but Reason is not a correct explanation of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

20885.	Question : Assertion:Enzymes are similar in composition and action in most animals. Reason:Enzymes accelerate the biochemical reactions.
Answer» If both Assertion and REASON are true and Reason is the CORRECT EXPLANATION of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is FALSE. If both Assertion and Reason are false Answer :B

Discussion

20886.	Question : Assertion:From evolutionary point of view,human gestation period is believed to be shortening.Reason:From evolutionary point of view,human gestation period is believed to be shortening.Reason:One major evolutionary trend in humans has been larger head undergoing relatively faster growth rate in the foetal stage.
Answer» If both assertion and reason are true and reason is the CORRECT explaination of assertion If both assertion and reason are true but reason is not correct explaination of assertion If assertion is true but reason is false If both assertion and reason are false. Solution :Assertion is false as the humans WOULD require more GESTATION period(Should have been 21 months as compared to 9 months and will increase).Similarly the head size is increasing (especially the frontal brain)Hence the brain growth occurs after birth till 2 years(When the arterior fontanellae close at i8 months)and some more till 30 years when finlly the cranial sutures close.Thus an increase in brain/skull size wpuld required increase in gestation period,hence both assertion and reason are false.

Discussion

20887.	Question : Assertion.Extranuclear chromosome are present in mitochondria and plastids. Reason.They are prochromosomes or organelle chromosomes
Answer» If both ASSERTION and REASON are TRUE but Reason is not a CORRECT EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20888.	Question : Assertion:Continued outbreeding reduces fertility and productivity. Reason:It help to elimate useful genes
Answer» Both Assertion andReason are true and Reason is CORRECT explanation of Assertion. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion Assertion is true but Reason is false Both Assertion and Reason are false. Answer :C

Discussion

20889.	Question : Assertion:Darwin held that small favourable variations formed the raw material for evolution Reason:Darwin did not go into the factors which produce variations.
Answer» If both Assertion and Reason are true and Reason is the correct explanation of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is FALSE. If both Assertion and Reason are false ANSWER :B

Discussion

20890.	Question : Assertion:DNA is responsible for the trnsmission of hereditary information of hereditary information from one generation to next generation.
Answer» SOLUTION :Both ASSERTION and Reason are TRUE and Reason is correct explanation of Assertion

Discussion

20891.	Question : Assertion:A woman of blood group AB when married to an O group man will never get an AB group child because Reasoning:Blood groups O gene is dominant over A,B or AB
Answer» Both ASSERTION and Reason are TRUE and Reason is the correct explanation of Assertion Both Assertion and Reason are true but Reason is not a correct explanation of Assertion Assertion is true but Reason is FALSE Assertion is false but Reason is true Answer :C

Discussion

20892.	Question : Assertion:Basis of adaptation is the preexisting gene mutation Reason:In changed environment , a hidden gene mutation may express and result in survival of the organisms and finally lead to adaptation to new conditions
Answer» If both Assertion and REASON are true and Reason is the CORRECT explanation of Assertion If both Assertion and Reason are true and Reason is not the correct explanation of Assertion If Assertion is true but Reason is false. If both Assertion and Reason are false ANSWER :A

Discussion

20893.	Question : Assertion:(A): Paratope is the antigen -binding site Reason(R ): It is a part of antibody
Answer» Both (A) and (R are TRUE .(R) EXPLAINS(A) (A) is true (R ) is FALSE Both(A) is true (R ) are FLASE (A) is false (R ) is true Answer :A::B

Discussion

20894.	Question : Assertion:A cholera patient is given glucose electrolytes and water Reason : These plasmalyse the disease causing germs
Answer» Both ASSERTION and REASON are true and Reason is the correct explanation of Assertion Both Assertion and Reason are true but Reason is not a correct explanation of Assertion Assertion is true but Reason is false Assertion is false but Reason is true Solution :Cholera patient is given these to over come dehydration to which human cells may PLASMOLYSE

Discussion

20895.	Question : Assertion :- x = sin^2(omegat) represents a SHM about mean positionx=( 1 ) /( 2 ). Reason :- (a prop-x) is the necessary condition for SHM.
Answer» If both Assertion & Reason are TRUE & the Reason is a CORRECT EXPLANATION of the Assertion. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are False. ANSWER :A

Discussion

20896.	Question : Assertion : Wounds heal slowly due to vitamin C deficiency . Reason : vitamin C is essential for collgaen formation
Answer» If both A and R are true and R is the correct EXPLANATION of A. If both A and R are true but R is not the correct explanation of A. If A is true but R is false A is false but R is true. Solution :WOUNDS heal slowly due to vitamin deficiency . The best characterized function of vitamin C is the synthesis of collagen connective tissue protein at the level of hydroxylation of prolyl and lysyl residues of procollagen. THUS vitamin C is IMPORTANT for tissue healing . PATIENTS with peptic ulcers will heal faster on vitamin C than with extra vitamin C.

Discussion

20897.	Question : Assertion :- XeF_4 exists while XeH_4 does not exist. Reason :- In XeH_4 d-orbital contraction is absent.
Answer» If both ASSERTION & REASON are TRUE & the Reason is a CORRECT explanation of the Assertion. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are False. Answer :A

Discussion

20898.	Question : Assertion : When two tuning fork of frequency 256 Hz and 324 Hz are vibrating together. Beats will not be heard. Reason : Superposition of sound waves is possible for all frequencies of sound.
Answer» If both Assertion & REASON are True & the Reason is a correct EXPLANATION of the Assertion. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. If Assertion is True but the Reason is FALSE. If both Assertion & Reason are False. ANSWER :B

Discussion

20899.	Question : Assertion. When tryptophan is present the repressor is unable to bind to the operator. Reason. Transcription of structural genes occurs.
Answer» If both ASSERTION and Reason are true and the Reason is a correct EXPLANATION of the Assertion . If both Assertion and Reason are true but Reason is not a correct EXPLANATIONS of the Assertion If Assertion is true but the Reason is FALSE . If both Assertion and Reason are false. Answer :D

Discussion

20900.	Question : Assertion : When six moleculesof carbon dioxide participate ini photosynthesis , 12 moleculesof NADPH + H^(+)and 18 ATP are used up , forming one hexose molecule. Reason : The photosynthesislight reaction results in the formation of ATP and NADPH_(2) .
Answer» If both the assertion and reason are true andreason is CORRECT explanation of the assertion . If both the assertion and reason are true but reason is not a correct explanation of the assertion . If the assertion is true but the reason is FALSE. If both assertion and reason are false. Solution :When six moleculesof carbon dioxideenter calvincycle , ONE hexose molecule is formed , whereas 18 ATP and 12 NADPH + `H^(+)` molecules are used up. The lightreaction of photosynthesis RESULTS in the formation of ATP and `NADPH_(2)` .

Discussion

Explore topic-wise InterviewSolutions in .

Question : Asssertion: A geneticist crossed two plants. He got 50% tall and 50% dwarf plants in the progeny. Reason: One parent was heterozygous tall while the other was dwarf.

Question : Association of animals when both partners are benefited is :

Question : Assume that a cross over and resulting chiasma occurred between two gene loci 100% of the time. What would be the per centage of recombinant chromosomes among the progeny?

Question : Association areas of cerebral cortex are

Question : Associated symbiosis is shown by:

Question : Assisted reproductive technology, IVF involves transfer of:

Question : Assisted reproductive technologies (ART)

Question :Assisted reproductive method like IVF, is associated with transport of what?

Question : Assetion Number of chromosomes in one genome is equal to nukber of linkage goups Reason Linkage groups give important information about the location of genes in the chromosomes

Question : Assigning a '+' sign for beneficial interaction, '-' sign for detrimental and '0' for neutral interaction, outcomes of competition can be represented as:

Question : Assimilatory power required to produce one molecule of glucose through C_3 cycle in C_3 plants is

Question : Assisted productive technology IVF involves transfer of

Question : Assertlon:-Racemose inflorescence is unlimited type of inflorescence. Reason :-In Racemose inflorescence flowers arranged in acropetal manner.

Question : Assertion.Two chromatids remain held together as one point called centromer. Reason.Chromosome is double at tall points along its length excluding centromere.

Question : Assertion:The Y chromosome is called androsome Reason:X and Y chromosome differ in form and size.

Question : Assertion:The short legged sheep breed true. Reason.They appeared by mutation in one generation.

Question : Assertion:The progeny of pureline varieties aresimilar in genotype and phenotype. Reason:They are raised by self fertilization .

Question : Assertion:sex of the baby depends on human male . Reason :They are homogametic.

Question : Assertion:Speciation is not likely to occur simply by changes in the genotype of a population. Reason:Natural selection really means differential reproduction

Question : Assertion:Progeny of pure line is heterozygous. Reson.It is a dihybrid cross.

Question : Assertion:Ratio of complementary genes is 9:7. Reason.Ratio of supplementary genes is 9:3:4

Question : Assertion:Progeny of pure line is heterozygous. Reason.Pure lines are not the progeny of homozygous organisms

Question : Assertion:Persons of AB blood group are universal acceptors because reason : They can receive blood from persons of all blood groups

Question : Assertion:Over exposure to sun tans the skin in human beings. Reason:In epidermal cells melanin appear and saves the skin from UV rays of sun.

Question : Assertion:Mendel successfully formulated the laws of heredity. Reaso.Mendel did not perfomr the study of one character at a time.

Question : Assertion:Multiple genes are group of genes located at different loci and involved in the expression of one character they also called cumulative genes. Reason.Cumulative gene control colour of wheat kernel,skin colour In humans and height in man

Question : Assertion:Malaria can be Contained with the introduction of larvicidal fish , Gambusia, in ponds, tanks and pubbles Reason : Gambusia is highly specific in devouring larvas of female anopheles mosquitoes

Question : Assertion:Interspecific mating often produce a more vigorous but sterile F_1 hybrids . Reason:Reproductive isolation does not let evolution to occur.

Question : Assertion:Lamarck's theory of organic evolution states that use and disuse of organs and environment cause inheritable variations. Reason: The modern theory of evolution is called Neo-Darwinism.

Question : Assertion:Isolation checks inbreeding among the otherwise potential mates Reason: This preserves variations which can lead to speciation (evolution)

Question : Assertion:Insecticides and antibiotics remain effective for an unlimited period Reason:Organisms never lose sensitivity to insecticides and antibiotics

Question : Assertion:Insects visit flowers to gather honey.Reason:Coconut fruit can float and get dispersed over thaousands of kilometersbefore losing viability.

Question : Assertion:In eukaryotic chromosome,DNA is a long double stranded and linear. Reason:The eukaryotic chromosome are composed of DNA ,protiens ,RNA ,metal ions and enzymes.

Question : Assertion:Human is not suitable for breeding experiments to investigate the human traits. Reason:X and Y chromosomes differ in form and size.

Question : Assertion:Enzymes are similar in composition and action in most animals. Reason:Enzymes accelerate the biochemical reactions.

Question : Assertion.Extranuclear chromosome are present in mitochondria and plastids. Reason.They are prochromosomes or organelle chromosomes

Question : Assertion:Continued outbreeding reduces fertility and productivity. Reason:It help to elimate useful genes

Question : Assertion:Darwin held that small favourable variations formed the raw material for evolution Reason:Darwin did not go into the factors which produce variations.

Question : Assertion:DNA is responsible for the trnsmission of hereditary information of hereditary information from one generation to next generation.

Question : Assertion:A woman of blood group AB when married to an O group man will never get an AB group child because Reasoning:Blood groups O gene is dominant over A,B or AB

Question : Assertion:Basis of adaptation is the preexisting gene mutation Reason:In changed environment , a hidden gene mutation may express and result in survival of the organisms and finally lead to adaptation to new conditions

Question : Assertion:(A): Paratope is the antigen -binding site Reason(R ): It is a part of antibody

Question : Assertion:A cholera patient is given glucose electrolytes and water Reason : These plasmalyse the disease causing germs

Question : Assertion :- x = sin^2(omegat) represents a SHM about mean positionx=( 1 ) /( 2 ). Reason :- (a prop-x) is the necessary condition for SHM.

Question : Assertion : Wounds heal slowly due to vitamin C deficiency . Reason : vitamin C is essential for collgaen formation

Question : Assertion :- XeF_4 exists while XeH_4 does not exist. Reason :- In XeH_4 d-orbital contraction is absent.

Question : Assertion : When two tuning fork of frequency 256 Hz and 324 Hz are vibrating together. Beats will not be heard. Reason : Superposition of sound waves is possible for all frequencies of sound.

Question : Assertion. When tryptophan is present the repressor is unable to bind to the operator. Reason. Transcription of structural genes occurs.

Question : Assertion : When six moleculesof carbon dioxide participate ini photosynthesis , 12 moleculesof NADPH + H^(+)and 18 ATP are used up , forming one hexose molecule. Reason : The photosynthesislight reaction results in the formation of ATP and NADPH_(2) .