24277 + Interview Questions in Biology in Class 12 Page 425 InterviewSolution

21201.	Question :Assertion :-In roots vascular bundles show radial arrangement of xylem and phloem. Reason :-In roots arrangement of xylerr the phloem on different radii facilitates absorption process.
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

21202.	Question : Assertion: In several fungi and plants, the term heterothallic and dioecious are used to denote the unisexual condition.
Answer» Solution :In several fungi and PLANTS,the term heterothallic and dioecious are USED to denote the unisexual condition. In flowering plants, the unisexual MALE flower is staminate, i.e. bearing stamens, while the FEMALE is pistilate, i.e. bearing pistils.

Discussion

21203.	Question : Assertion: In sigmoid growth curve, population finally stabilises ilself. Reason: Finally, the death rate increases than the birlh rale.
Answer» If both ASSERTION and Reason are TRUE and the Reason is the correct EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false If both Assertion and Reason are false. Solution :If Assertion is true but the Reason is false

Discussion

21204.	Question : Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote) Reason : Both bacteria and yeast multiply very fast to form huge population, which express the desired gene
Answer» If both ASSERTION and Reason are true and the Reason is the correct EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is FALSE. If both Assertion and Reason are false. Answer :A

Discussion

21205.	Question : Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryote) or yeast (eukaryote).Reason: Both bacteria and yeast multiply very fast to form huge populations which express the desired gene.
Answer» ANSWER :A

Discussion

21206.	Question : Assertion :- In palmately compound leaves rachis is absent. Reason :-In palmately compound leaf all the leaflets are attached on commonpoint i.e, at the tip of petiole.
Answer» If both ASSERTION & REASON are TRUE & Reason is a CORRECT explanation of the Assertion. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are false. Answer :A

Discussion

21207.	Question : Assertion :-In palmately compound leaves rachis is absent. Reason :-In palmately compound leaf all leaflets are attached on common point i.e. at the tip of petiole.
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

21208.	Question : Assertion:-In mustard leaves are compound. Reason :-In mustard leaf lamina shows incisions up to midrib.
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 :D

Discussion

21209.	Question : Assertion :- In monocots parallel venation found in leaves. Reason :-In monocot leaves veins and veinlets donot form any kind of reticulation.
Answer» If both Assertion & Reason are TRUE & Reason is a CORRECT EXPLANATION of the Assertion. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are false. Answer :A

Discussion

21210.	Question : Assertion:-In monocots parallel venation found in leaves. Reason :-In monocot leaves veins and veinlets do not form any kind of reticulation.
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

21211.	Question : Assertion In mitosis, two identical cells are produced from a single cell and karyokinesis is followed by cytokinesis. Reason Cytokinesis is of two types, i.e. by cell-furrow method and cell plate method.
Answer» Both A and R are true and R is the correct EXPLANATION of A Both A and R are true, but R is not the correct explanation of A A is true, but R is false A and R are false Solution :Mitosis is the process by which a cell nucleus divides (karyokinesis) to produce two daughter nuclei containing identical sets of chromosomes to the parent cell. It is usually followed immediately by division of cytoplasm (CYTOKINESIS) to FORM two daughter cells. In plants, cytokinesis occurs by cell-plato method whereas in animals, it occurs by cell FURROW method.

Discussion

21212.	Question : Assertion :- In lac operon, in the presence of inducer RNA polymerase access to the promotor and transcription proceeds. Reason:- In lac operon in the presence of inducer repressor protein is inactivated
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

21213.	Question : Assertion: In Indian dairy farms, the owners prefer to have buffaloes than the cows. Reason: Buffaloes yield more milk than the cows and their milk contains fats.
Answer» If both Assertion and REASON are TRUE and the Reason is the CORRECT explanation of the Assertion. If both Assertion and Reason are true and the Reason is not the Reason is not the correct explanation of the assertion If assertion is true but the Reason are false If both Assertion and Reason are false Answer :A

Discussion

21214.	Question : Assertion: In India, there is rapid, decline in infant mortality rate and MMR. Reason: In India, more and more attention is being given to RCH programmes.
Answer» If both Assertion cord Reason are true and Reason is CORRECT EXPLANATION of Assertion If both Assertion and Reason are true but Reason is not correct explanation of Assertion If Assertion is true but Reason is FALSE. If both Assertion and Renson are false. Answer :A

Discussion

21215.	Question : Assertion : In India, the human population is currently undergoing the lag phase. Reasons: A major portion of Indian population is still below poverty line.
Answer» If both ASSERTION and Reason are TRUE and Reason is a CORRECT explanation of Assertion. If both Assertion and Reason are true and Reason is not a correct explanation of Assertion. If Assertion is true but Reason is false If both Assertion and Reason are false. ANSWER :D

Discussion

21216.	Question : Assertion: In India, the human population is currently undergoing the lag phase. Reason: A major portion of Indian population is still below poverty line.
Answer» If both ASSERTION and REASON are TRUE and the Reason is the correct explanation of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false If both Assertion and Reason are false. Solution :If both Assertion and Reason are false.

Discussion

21217.	Question : Assertion: In humans, the gamete contributed by male determines whether the child produced will be male or female.Reason: Sex in humans is polygenic trait depending upon a cumulative effect of some genes on X-chromosome and some on Y-chromosome.a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.b) If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.c) If Assertion is true but the Reason is false.d) If both Assertion and Reason are false.
Answer» If both Assertion and REASON are TRUE and the Reason is the CORRECT EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

21218.	Question : Assertion : In India, the human population is currently undergoing the lag phase. Reason: A major portion of Indian population is still below proverty line.
Answer» If both ASSERTION cord REASON are TRUE and Reason is CORRECT explanation of Assertion If both Assertion and Reason are true but Reason is not correct explanation of Assertion If Assertion is true but Reason is false. If both Assertion and RENSON are false. Answer :D

Discussion

21219.	Question : Assertion :- In hydroponics nutrient solutions must be adequately aerated. Reason:- Proper aeration do not allow precipitation of minerals.
Answer» If both assertion and REASON are TRUE and reason is the correct explanation of assertion. If both assertion and reason are true but 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

21220.	Question : Assertion: In honeybee, female is diploid and male is haploid.Reason: Gametes are formed by meiosis in female and by mitosis in male.a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.b) If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.c) If Assertion is true but the Reason is false.d) If both Assertion and Reason are false.
Answer» If both Assertion and REASON are true and the Reason is the correct explanation of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

21221.	Question : Assertion : In Griffith'sexperiment, a mixture of heat-killed virulent bacteria R and live non - virulent bacteria S, lead to the death of mice. Reason : 'Transforming principle' got transferred from heat -killed R strain and made it virulent.
Answer» If both ASSERTION and reason are true and reason is the correct EXPLANATION of assertion If both assertion and reason are true butreason is notthe correct explanation of assertion If assertion is true but reason is false if both assertion and reason are false. Answer :b

Discussion

21222.	Question :Assertion: In four o'clock or snapdragon plant, a cross between a homozygous white-flowered individual and a homozygous red-flowered one produces pink-flowered plants.Reason: In these plants, the flower colour is determined by three alleles.a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.b) If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.c) If Assertion is true but the Reason is false.d) If both Assertion and Reason are false.
Answer» If both Assertion and Reason are true and the Reason is the CORRECT explanation of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

21223.	Question : Assertion: In eukaryotic chromosome, DNA is long, double-stranded and linear.Reason: The eukaryotic chromosomes are composed of DNA, proteins, RNA, metal ions and enzymes.
Answer» If both Assertion and REASON are true and the Reason is the CORRECT EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

21224.	Question : Assertion :- In displacement method of finding focal length of a convex lens, its magnification in a position of lens is -2, then magnification in another position of lens should be -1/2. Reason :- This method can not be applied for concave lens.
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

21225.	Question : Assertion :- In ETS of respiration, oxidation of one carrier and reduction of another carrier is essential. Reason:- In respiratory ETS, energy of oxidation reduction utilised for production of proton gradient.
Answer» If both assertion and REASON are TRUE and reason is the correct EXPLANATION of assertion. If both assertion and reason are true but 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

21226.	Question :Assertion :-In dry fruits peri carp is not dfterentiated into epicarp, mesocarp and endocarp. Reason :-In dry fruits pericarp is thin and not fleshy
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

21227.	Question : A particle is moving along x-direction with a constant acceleration a. The particle starts from x=x_0 position with initial velocity u. We can define the position of the particle with time by the relation x=x_0+ut+(1)/(2)at^2 plot the position of the particle in relation with time is following situations (i) If initial position of the particle is on negativ x-axis, initial velocity is positive and acceleration is negative. (ii) If initial position is positive, initial velocity is negative and acceleration is positive.
Answer» If both ASSERTION and REASON are true and the Reason is the correct EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false If both Assertion and Reason are false. Solution :If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

Discussion

21228.	Question :Assertion :- In clear weather, sky appears to be blue not violet. Reason :- In clear atmosphere, light of shorter wavelength is scattered more as compared to light of longer wavelength
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

21229.	Question : Assertion : In crustose lichenstage , by corroding action , soil formation occurs but this action is very slow. Reason : Crustose lichens produce carbonic acid which corrodes the rock.
Answer» If both ASSERTION and REASON are TRUE and Reason is CORRECT EXPLANATION of Assertion. If both Assertion and Reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

21230.	Question : Assertion :- In calotrpis and guava opposite phyllotaxy is found. Reason :-In calotropis and guava a pair of leaves arise on each node.
Answer» If both Assertion & REASON are TRUE & Reason is a CORRECT EXPLANATION of the Assertion. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are false. Answer :A

Discussion

21231.	Question : Assertion:-In Calotropis and guava opposite phyllotaxy is found. Reason :-In Calotropis and guava a pair of leaves arise on each node.
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

21232.	Question : Assertion:- In basal placentation ovary is unilocular. Reason:- Basal placentation is found in sunflower
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

21233.	Question : Assertion :- In basal placentation ovary is unilocular. Reaon :- Basal placentation is found in sunflower.
Answer» If both Assertion & Reason are TRUE & Reason is a CORRECT EXPLANATION of the Assertion. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are false. Answer :B

Discussion

21234.	Question :Assertion:-In Australian Acacia the leaflets are short lived. Reason :-To minimize transpiration leaflets shade off and petiole expands and becomes leaf like.
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

21235.	Question : Assertion: In Ascomycetes and Basidiomycetes well distict Dikaryophae present during sexual life. Reason: During sexual reproduction of Ascomycetes and Basidiomycetes phasmogamy is immediately followed by karyogamy.
Answer» If both ASSERTION and REASON are TRUE and the reason is a CORRECT explanation of the assertion. If both Assertion and Reason are truebut 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

21236.	Question : Assertion: In apomixis plants of new genetic sequence are produced Reason: In apomixis plants of new genetic sequence are produced Reason: In apomixis two individual of same genetic sequence meet
Answer» If both the assertion and the REASON are true and the reason is a correct EXPLANATION of the assertion If both the assertion and reason are true but the reason is not a correct explanation of the assertion If the assertion is true but the reason is FALSE If both the assertion and reason is false ANSWER :D

Discussion

21237.	Question : Assertion :- In Australian Acacia the leaflets are short lived. Reason :- To minimize transpiration leaflets shade off and petiole expands and becomes leaf like.
Answer» If both ASSERTION & REASON are True & Reason is a CORRECT EXPLANATION of the Assertion. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion. If Assertion is True but the Reason is False. If both Assertion & Reason are false. Answer :A

Discussion

21238.	Question : AssertionIn angiosperms, the conductioin of water is more effcient because their xylem has vassels .Reason . Conduction of water by vessel elements is an active process with energy supplied by xylem perenchyma rich in mitochondria
Answer» if both are true with reason being correct EXPLANATION (A), both true but reason is not correct explanation (B), ASSERTION is ture but reason is WRONG (C), both are wrong (D), Answer :C

Discussion

21239.	Question : Assertion :- In all plants Mo is essential for nitrogen metabolism. Reason:- In all plants it is constituent of nitrogenase enzyme so helps in nitrogen nutrition.
Answer» If both assertion and reason are TRUE and reason is the CORRECT EXPLANATION of assertion. If both assertion and reason are true but 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

21240.	Question : Asseration :In adult rabbit , the excretory and genital system become inter connected. Reason : Sexual dimorphism is seen in rabbit.
Answer» Both ASSERTION and REASON 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 :Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

Discussion

21241.	Question : Assertion :- In a multi-step reaction, the molecularity of overall reaction has no significance. Reason :- Molecularity of a reaction is always equal to order of reaction.
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 :C

Discussion

21242.	Question : Assertion: In a woman after hysterectomy (removal of uterus) the ovarian cycle is stopped. Reason: Stoppage of FSH secretion.
Answer» If both ASSERTION and Reason are TRUE and the Reason is the CORRECT EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

21243.	Question : Assertion : In a metabolic reaction with a negative DeltaG, the productscontain less free energy than the reactants, energy is released and entropy increases. Such negative DeltaG reaction is spontaneous because it occurswithoutan input of energy .
Answer» If both the assertion and reason are TRUE STATEMENT andreason is correct EXPLANATION of the assertion . If both the assertion and reason are true statement but reason is not a correct explanation of the assertion . If the assertion is true but the reason is a false statement. If both assertion and reason are false statements. ANSWER :A

Discussion

21244.	Question : Assertion :- In a cassegrain telescope objective mirror is parabolic in place of sphericalReason :- No chromatic aberration in parabolic mirror
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

21245.	Question : Assertion : In 1900, world population was 2000 million. Reason : Indian population crossed 2000 million mark in May 2000.
Answer» If both Assertion and Reason are TRUE but the reason is the correct EXPLANATION of the assertion, then mark (1). If both Assertion and Reason are true but the reason is not the correct explanation of the assertion, then mark (2). If Assertion is true but Reason is false, then mark (3). If both Assertion and Reason are false, then mark (4). Answer :C

Discussion

21246.	Question :Assertion :- If one half of a mirror is covered by an opaque material, then only half image of the object is formed. Reason :- By covering one half of the mirror, focal length of mirror will be halved.
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 :D

Discussion

21247.	Question : Assertion: If there is no rainfall or scanty rainfall throughout the year, then xerophytic vegetation occurs. Reason: Amount or timings of rainfall determine the type of vegetation of an area.
Answer» If both ASSERTION and Reason are TRUE and the Reason is the CORRECT EXPLANATION of the Assertion. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. If Assertion is true but the Reason is false If both Assertion and Reason are false. Solution :If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

Discussion

21248.	Question : Assertion : If an endosperm cell of angiosperm contains 24 chromosomes, the number of chromosomes in each cellor will be 16. Reason : As endosperm is triploid and took cells axe diploid, the chromosomes under in each of root cell will be 16.
Answer» If both Assertion and REASON are true and Reason is CORRET EXPLANATION of Assertion If both Assertion and Reason are true and Reason is not corret explanation of Assertion If Assertion is true but Reason is false If both Assertion and Reason are false Answer :A

Discussion

21249.	Question : Assertion :- Hydroponics is one of the investigatory method to study mineral requirements of plants. Reason:- By hydroponics essential elements were identified and their deficiency symptoms discovered.
Answer» If both ASSERTION and REASON are TRUE and reason is the CORRECT EXPLANATION of assertion. If both assertion and reason are true but 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

21250.	Question : Assertion : Hybridoma cells are shifted to a medium deficient in nutrient which cannot be synthesized by myeloma cells. Reason : This medium allows selection of hybridoma cells.
Answer» If both assertion and reason are TRUE and reason is the CORRECT explanationof assertion If both assertion and reason are true but reason is not the correct explanation of assertion If assertion is true but reason is FALSE If both assertion and RESON are false. Solution :The hybridoma cells are shified to a medium

Discussion

Explore topic-wise InterviewSolutions in .

Question :Assertion :-In roots vascular bundles show radial arrangement of xylem and phloem. Reason :-In roots arrangement of xylerr the phloem on different radii facilitates absorption process.

Question : Assertion: In several fungi and plants, the term heterothallic and dioecious are used to denote the unisexual condition.

Question : Assertion: In sigmoid growth curve, population finally stabilises ilself. Reason: Finally, the death rate increases than the birlh rale.

Question : Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote) Reason : Both bacteria and yeast multiply very fast to form huge population, which express the desired gene

Question : Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryote) or yeast (eukaryote).Reason: Both bacteria and yeast multiply very fast to form huge populations which express the desired gene.

Question : Assertion :- In palmately compound leaves rachis is absent. Reason :-In palmately compound leaf all the leaflets are attached on commonpoint i.e, at the tip of petiole.

Question : Assertion :-In palmately compound leaves rachis is absent. Reason :-In palmately compound leaf all leaflets are attached on common point i.e. at the tip of petiole.

Question : Assertion:-In mustard leaves are compound. Reason :-In mustard leaf lamina shows incisions up to midrib.

Question : Assertion :- In monocots parallel venation found in leaves. Reason :-In monocot leaves veins and veinlets donot form any kind of reticulation.

Question : Assertion:-In monocots parallel venation found in leaves. Reason :-In monocot leaves veins and veinlets do not form any kind of reticulation.

Question : Assertion In mitosis, two identical cells are produced from a single cell and karyokinesis is followed by cytokinesis. Reason Cytokinesis is of two types, i.e. by cell-furrow method and cell plate method.

Question : Assertion :- In lac operon, in the presence of inducer RNA polymerase access to the promotor and transcription proceeds. Reason:- In lac operon in the presence of inducer repressor protein is inactivated

Question : Assertion: In Indian dairy farms, the owners prefer to have buffaloes than the cows. Reason: Buffaloes yield more milk than the cows and their milk contains fats.

Question : Assertion: In India, there is rapid, decline in infant mortality rate and MMR. Reason: In India, more and more attention is being given to RCH programmes.

Question : Assertion : In India, the human population is currently undergoing the lag phase. Reasons: A major portion of Indian population is still below poverty line.

Question : Assertion: In India, the human population is currently undergoing the lag phase. Reason: A major portion of Indian population is still below poverty line.

Question : Assertion : In India, the human population is currently undergoing the lag phase. Reason: A major portion of Indian population is still below proverty line.

Question : Assertion :- In hydroponics nutrient solutions must be adequately aerated. Reason:- Proper aeration do not allow precipitation of minerals.

Question : Assertion : In Griffith'sexperiment, a mixture of heat-killed virulent bacteria R and live non - virulent bacteria S, lead to the death of mice. Reason : 'Transforming principle' got transferred from heat -killed R strain and made it virulent.

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

Question : Assertion :- In displacement method of finding focal length of a convex lens, its magnification in a position of lens is -2, then magnification in another position of lens should be -1/2. Reason :- This method can not be applied for concave lens.

Question : Assertion :- In ETS of respiration, oxidation of one carrier and reduction of another carrier is essential. Reason:- In respiratory ETS, energy of oxidation reduction utilised for production of proton gradient.

Question :Assertion :-In dry fruits peri carp is not dfterentiated into epicarp, mesocarp and endocarp. Reason :-In dry fruits pericarp is thin and not fleshy

Question :Assertion :- In clear weather, sky appears to be blue not violet. Reason :- In clear atmosphere, light of shorter wavelength is scattered more as compared to light of longer wavelength

Question : Assertion : In crustose lichenstage , by corroding action , soil formation occurs but this action is very slow. Reason : Crustose lichens produce carbonic acid which corrodes the rock.

Question : Assertion :- In calotrpis and guava opposite phyllotaxy is found. Reason :-In calotropis and guava a pair of leaves arise on each node.

Question : Assertion:-In Calotropis and guava opposite phyllotaxy is found. Reason :-In Calotropis and guava a pair of leaves arise on each node.

Question : Assertion:- In basal placentation ovary is unilocular. Reason:- Basal placentation is found in sunflower

Question : Assertion :- In basal placentation ovary is unilocular. Reaon :- Basal placentation is found in sunflower.

Question :Assertion:-In Australian Acacia the leaflets are short lived. Reason :-To minimize transpiration leaflets shade off and petiole expands and becomes leaf like.

Question : Assertion: In Ascomycetes and Basidiomycetes well distict Dikaryophae present during sexual life. Reason: During sexual reproduction of Ascomycetes and Basidiomycetes phasmogamy is immediately followed by karyogamy.

Question : Assertion: In apomixis plants of new genetic sequence are produced Reason: In apomixis plants of new genetic sequence are produced Reason: In apomixis two individual of same genetic sequence meet

Question : Assertion :- In Australian Acacia the leaflets are short lived. Reason :- To minimize transpiration leaflets shade off and petiole expands and becomes leaf like.

Question : AssertionIn angiosperms, the conductioin of water is more effcient because their xylem has vassels .Reason . Conduction of water by vessel elements is an active process with energy supplied by xylem perenchyma rich in mitochondria

Question : Assertion :- In all plants Mo is essential for nitrogen metabolism. Reason:- In all plants it is constituent of nitrogenase enzyme so helps in nitrogen nutrition.

Question : Asseration :In adult rabbit , the excretory and genital system become inter connected. Reason : Sexual dimorphism is seen in rabbit.

Question : Assertion :- In a multi-step reaction, the molecularity of overall reaction has no significance. Reason :- Molecularity of a reaction is always equal to order of reaction.

Question : Assertion: In a woman after hysterectomy (removal of uterus) the ovarian cycle is stopped. Reason: Stoppage of FSH secretion.

Question : Assertion : In a metabolic reaction with a negative DeltaG, the productscontain less free energy than the reactants, energy is released and entropy increases. Such negative DeltaG reaction is spontaneous because it occurswithoutan input of energy .

Question : Assertion :- In a cassegrain telescope objective mirror is parabolic in place of sphericalReason :- No chromatic aberration in parabolic mirror

Question : Assertion : In 1900, world population was 2000 million. Reason : Indian population crossed 2000 million mark in May 2000.

Question :Assertion :- If one half of a mirror is covered by an opaque material, then only half image of the object is formed. Reason :- By covering one half of the mirror, focal length of mirror will be halved.

Question : Assertion: If there is no rainfall or scanty rainfall throughout the year, then xerophytic vegetation occurs. Reason: Amount or timings of rainfall determine the type of vegetation of an area.

Question : Assertion : If an endosperm cell of angiosperm contains 24 chromosomes, the number of chromosomes in each cellor will be 16. Reason : As endosperm is triploid and took cells axe diploid, the chromosomes under in each of root cell will be 16.

Question : Assertion :- Hydroponics is one of the investigatory method to study mineral requirements of plants. Reason:- By hydroponics essential elements were identified and their deficiency symptoms discovered.

Question : Assertion : Hybridoma cells are shifted to a medium deficient in nutrient which cannot be synthesized by myeloma cells. Reason : This medium allows selection of hybridoma cells.