22339 + Interview Questions in Biology in Class 11 Page 410 InterviewSolution

20451.	Question : Assertion : Tendons are very tough and inelastic. Reason: Tendons join the muscles to the bone.
Answer» If both Assertion and REASON are TRUE but Reason is not a correct EXPLANATION of Assertion If both Assertion and Reason are true but Reason is not a correct explanation of Assertion. If Assertion is true but Reason is False If both Assertion and Reason are false Answer :B

Discussion

20452.	Question : Assertion. Synaotic vesicles fuse with the presynaptic membrane (axolemma) and release neurotransmitter by exocytosis. Reason. Neurotransmitters crosses the synpse and joins receptors on postsynaptic (dendrite) membrane, this opens ionic channels that allow Na^(+) to enter and K^(+) to leave the dendrite, there by depolarizing postsynaptic membrane.
Answer» If both A and R are TRUE and R is the CORRECT EXPLANATION of A. If both A and R are true and R is not the correct explanation of A. If A is true but R is false. If both A and R are false. Solution :N//A

Discussion

20453.	Question : Assertion : Synaptic knob of axon has large number of synaptic vesicles. Reason: Conduction of nerve impulse is always from axon to dendron.
Answer» If both ASSERTION and Reason are true and assertion is CORRECT explanation of Assertion If both Assertion and Reason are true but Reason is not a correct explanation of Assertion. If Assertion is true but Reason is False If both Assertion and Reason are false Answer :B

Discussion

20454.	Question : Assertion : Substrate for photorespiration is glycolate.Reason: Glycolate acts as a respiratory substrate during during photorespiration as O_(2) amount increases during photosynthesis.
Answer» If both ASSERTION and REASON are true and Reason is CORRECT EXPLANATION of Assertion. If both Assertion and Reason are true but Reason is not a correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20455.	Question : Assertion. Stimulus is interpreted by the brin and not by sense organs. Reason. Sense organs act as transducers, transforming the stimulus energy into impulse energy.
Answer» If both A and R are TRUE and R is the CORRECT EXPLANATION of A. If both A and R are true and R is not the correct explanation of A. If A is true but R is false. If both A and R are false. Solution :N//A

Discussion

20456.	Question : Assertion : Staminal tube is present in Malvaceae. Reason : It is due to monoadelphous condition.
Answer» If both ASSERTION and REASON are TRUE and the Rea-son is the CORRECT EXPLANATION of the Assertion. If both Assertion and Reason are true and the Rea-son is not the correct explanation of the Assertion. If Assertion is true, but Reason is false. If both Assertion and Reason is false. Answer :A

Discussion

20457.	Question : Assertion. Stamens are 6, polyandrous and tetradynamous in Brassica. Reason. Stamens are arranged in two whorls with lateral two in outer whorl, and four in inner whorl with anteroposterior median pairs showing tetradynamous condition. Stamens are free.
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 explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20458.	Question : Assertion. Stamens are syngenesious in Compositae. Reason. Filaments are fused and anthers are free in one group.
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 explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

20459.	Question : Assertion: Sponger have body organization of cellular level' Reason: There is some physiological division of labour.
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 but reason is not the correct explanation of the assertion. Answer :B

Discussion

20460.	Question : Assertion :- Sperm entrycausesa rearrangementofmaterialsin theooplasm . Reason:-Pathof themalepronucleustoward thefemalepronucleusis makedin theovumas a copulationpath .
Answer» If bothAssertionand Reasonare trueandthe REASONIS acorrect explanation of THEASSERTION . IfbothAssertionand Reason are truebutReason isnotcorrect explanationof theAssertion . If Assertionistruebut theReasonis FALSE . If BothAssertionand ReasonArefalse ANSWER :B

Discussion

20461.	Question : Assertion. SNS slows down peristalsis. Reason. Parasympathetic nervoussystem does the same.
Answer» If both A and R are TRUE and R is the CORRECT EXPLANATION of A. If both A and R are true and R is not the correct explanation of A. If A is true but R is false. If both A and R are false. Solution :N//A

Discussion

20462.	Question : Assertion : Silver fish shows complete metamorphosis. Reason : In the life history of silver fish, there are four stages : Egg to Larva to Pupa to Adult
Answer» If both Assertion and REASON are true and Reason is 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. Answer :D

Discussion

20463.	Question : Assertion : Serum cannot clot the blood. Reason: Serum is obtained from blood plasma minus blood-clotting proteins like prothrombin and fibrinogen.
Answer» If both ASSERTION and Reason are TRUE and Reason is CORRECT EXPLANATION of Assertion If both Assertion and Reason are true but Reason is not a correct explanation of Assertion. If Assertion is true but Reason is False If both Assertion and Reason are false Answer :A

Discussion

20464.	Question : Assertion : Series of reactions in TCA cycle takes place in mitochondria.Reason : Mitochondrial envelope contains all the respiratory enzymes required for respiratory reactions.
Answer» If both ASSERTION and REASON are true and Reason is correct explanation of Assertion. If both Assertion and Reason are true but Reason is not a correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. ANSWER :C

Discussion

20465.	Question : Assertion : Senescence occurs in all non-meristematic cells Reason :Meristems are potentially immortal.
Answer» If both ASSETION 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 explanation of the Assertion If Assertion is true but the Reason is false If both Assertion and Reaon are false Answer :A

Discussion

20466.	Question : Assertion : Senescence is the time when age associated defects are manifested Reason :Certain genes may be undergoing sequential switching on and off during one's life
Answer» If both ASSETION 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 explanation of the Assertion If Assertion is true but the Reason is false If both Assertion and Reaon are false Answer :A

Discussion

20467.	Question : Assertion : Secretion of ADH is controlled by osmotic pressure of blood. Reason : Changes in osmotic pressure are noted by osmoreceptors present in the hypothalamus.
Answer» If both ASSERTION and REASON are true and Reason is CORRECT explanation of the Assertion. If both Assertion and Reason are true but Reason is not correct explanation of the Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Answer :B

Discussion

20468.	Question : Assertion. Secondary xylem formed during spring is called spring wood and secondary xylem formed in autumn is called autumn wood. Reason . Spring wood and autumn wood is easily demarcated and leads to the formation of annual rings.
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 explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20469.	Question : Assertion: Scientific names have been standardized through ICBN. Reason: First international botanical congress was held in Paris in 1967.
Answer» ANSWER :3

Discussion

20470.	Question : Assertion : Saliva secretion is a reflex action. Reason : Saliva secretion is controlled by only brain and not the hormones.
Answer» If both ASSERTION and 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 Reason are false. Answer :C

Discussion

20471.	Question : Assertion. RQ indicates the type of substrate oxidized in cell respiration. Reason. Floating respiration uses carbohydrates.
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. If both A and R are false. Answer :B

Discussion

20472.	Question : Assertion: root pressure is largely responsible for ascent of sap in herbaceous plants Reason:root pressure is caused due to diffusion pressure gradient and is maintained by the activity of living cells
Answer» If both Assertion and REASON are TRUE and the Reason is a correct explaination of the Assertion If both Assertion and Reason are true and the Reason is not a correct explaination of the Assertion If Assertion is truebut the Reason is false If both Assertion and Reason are false ANSWER :b

Discussion

20473.	Question : Assertion root cells have lower water potential than leaf cellls Reason root cells have greater solute concentration
Answer» If both ASSERTION and Reason are true and the Reason is a correct expanation of the Assertion If both AssertionandReason re true but Reasonis not a correct eplanatin of the Assertion If Assertion is truebut the Reason is FALSE If both Assertion and Reason are false Answer :d

Discussion

20474.	Question : Assertion : Rhizopus does not form zygospores. Reason : It shows heterothallism.
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. If both A and R are false Answer :D

Discussion

20475.	Question : Assertion: Renal cells are involved in stimulating the formation of RBCs. Reason: The juxtaglomerular cells of kidney produceerythropoietin.
Answer» (a) Both, Assertion and REASON, are TRUE and Reason is the CORRECT explanation of Assertion (b) Both, Assertion and Reason, are true but Reason is not the correct explanation of Assertion (c) If Assertion is true but Reason is false Answer :A

Discussion

20476.	Question : Assertion : Red and blue light support the highest rate of synthesis. Reason: These are the only wavelengths reaching from the sun.
Answer» If both ASSERTION and Reason are TRUE and Reason is correct explaination 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 Reason are false. Answer :C

Discussion

20477.	Question : Assertion: Red muscles depend on anaerobic process for energy. Reason: Red muscles have few number of mitrochondira in them
Answer» If both assertion and REASON are ture and reason is the corect explanation of assertion If both assertion and reason are ture but reson is not the correct explanation of assertion If assertion is true reason is false If both assertion and reason are false Solution :Muscle contains a red coloured oxygen storing PIGMENT called myoglobin. Myoglobin content is high in some of the MUSCLES which gives a reddish appearance to them. Such muscles are called the red fibres. These muscles also contain plenty of mitochonidria which can utilise the large amount of oxygen stored in them for ATP PRODUCTION. These muscles, THEREFORE, can also be called aerobic muscle.

Discussion

20478.	Question : Assertion : RBC production is regulated by kidney. Reason : Erythropoietin reaches red bone marrow.
Answer» If both ASSERTION and REASON are TRUE and Reason is CORRECT EXPLANATION of the Assertion. If both Assertion and Reason are true but Reason is not correct explanation of the Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20479.	Question : Assertion : Recently, the government of india institued the Amrita Devi Bishnoi Wildlife Protection Award. Reason : We can speed up the reforestation by planting trees.
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 ture 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 are false Solution :Amrita Devi Bishnoi WILD Life Protection Award is for individuals or communities from rural areas that have shown EXTRAORDINARY courage and DEDICATION in protecting WILDLIFE.

Discussion

20480.	Question : Assertion. Quiescent centre of shoot apex is hemispherical in shape. Reason. Quiescent centre becomes hemispherical due to more growth in the centre and less growth in the periphery.
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 explanation of the Assertion If Assertion is true but the Reason is false If both Assertionand Reason are false ANSWER :D

Discussion

20481.	Question : Assertion: Rate of extinction of wildlife has become rapid in the last one hundred years. Reason: Unplanned human activities like population explosion, deforestation, industrialization, hunting, etc. have destroyed the natural habitats of many spp. of wildlife
Answer» If both Assertion and REASON are TRUE and Reason is 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 Reason is TALSE. If both Assertion and Reason are FALSE. Answer :A

Discussion

20482.	Question : Assertion : Purple cabbage leaves do not lose their colour in cold water but do so in boiling water.Reason : Plasma membrane becomes impermeable in boiling water and pigments come out.
Answer» If both ASSERTION and Reason are TRUE and Reason is CORRECT explanation of Assertions. 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 Reason are false. Answer :C

Discussion

20483.	Question : Assertion: PTH is a hypercalcemic hormone. Reason: Thymus degenerates in old individuals.
Answer» Assertion and reason are both true Assertion and reason are both false assertion is true but the reason is false assertion is false but the reason is true Solution :Parathyroid hormone (PTH) increases the `Ca^(2+)` levels in the BLOOD. PTH acts on bones and stimulates the PROCESS of BONE resorption (dissolution/demineralisation). PTH also stimulates reabsorption of `Ca^(2+)` by the renal tubules and increases `Ca^(2+)` ABSORPTION from the digested food. it is, thus, clear that PTH is s hypercalecemic hormone, i.e., it increases the blood `Ca^(2+)` level.

Discussion

20484.	Question : Assertion. Quiescent centre is located in root-apex. Reason. Cells are highly lignified and are dead.
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 explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :C

Discussion

20485.	Question : Assertion. Protoplasmicrespirationcan not be carried on for long. Reason. It breaks down cell's own material (proteins) and produces toxic ammonia.
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. If both A and R are false. Answer :A

Discussion

20486.	Question : Assertion : Proteins are linear polymers of long chains made up of amino acids. Reason: Amino acids are called building blocks of proteins.
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 explanation of the Assertion. If Assertion is true but the Reason is false. If both Assertion and Reason are false. Answer :A

Discussion

20487.	Question : Assertion : Proteins are commonly called body building biomolecules. Reason : Proteins act as enzymes which regulate the metabolism.
Answer» If both ASSERTION and 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 Reason are false. Answer :B

Discussion

20488.	Question : Assertion : Proteins, peptides and DNAs of pattrogenic organisms are used to make subunit vaccines. Reason : Subunit vaccines are pure, stable and safe.
Answer» A and R are true, R is the correct explanation of A A and R are true , R is not the correct explanation of A A is true , R is FALSE Both A and R are false ANSWER :A::C::D

Discussion

20489.	Question : Assertion : Protein and fat digestion are very fast in small intestine of man. Reason : Pancreatic juices contain strong proteolytic and lipolytic enzymes.
Answer» If both ASSERTION and 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 Reason are false. Answer :A

Discussion

20490.	Question : Assertion. Prokaryotic cells lack cyclosis in their cytoplasm. Reason. Eukaryotic cells lack respiratory enzymes in the plasmalemma.
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 :B

Discussion

20491.	Question : Assertion. Primary xylem is exarch in roots and endarch in stems. Reason. Exarch condition of xylem facilitates inflow of water from cortex whereas endarch condition favours ascent of sap
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 explanation of the Assertion If Assertion is true but the Reason is FALSE If both Assertionand Reason are false ANSWER :A

Discussion

20492.	Question : Assertion Primary cell wall is permeable whereas secondary cell wall is impermeable Reason Primary cel wasll is made up of cellulose whereas secondary cell wall is made up of lignin
Answer» If both ASSERTION and Reason are TRUE and the Reason is a correct expanation of the Assertion If both AssertionandReason re true but REASONIS not a correct eplanatin of the Assertion If Assertion is truebut the Reason is FALSE If both Assertion and Reason are false Answer :b

Discussion

20493.	Question : Assertion.Presenceof flavin nucleotideis essential for the activity of some enzymes. Reason. Flavin nucleotide isan activator of these enzymes.
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. If both A and R are false. Answer :A

Discussion

20494.	Question : Assertion : Presence of connective tissue inside the brain is essential for conduction of nerve impulse. Reason : Connective tissue hold together th nerve cells of brain.
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 and reason are FALSE If the assertion is false but reason is true Solution :Ordinary connective tissue is absent INSIDE the central nervous system. i.e., brain and spinal cord and has no nerurons of nerve tissue inside the brain and spinal cord are held together by SUPPORTING cells called neuroglia cells. Neuroglia cell resemble neurons and have long radiating processes but no nissl granules.

Discussion

20495.	Question : Assertion : Potometer is used to measure the rate of transpiration.Reason : It is based on principle that water lost in transpiration is equal to water absorbed.
Answer» If both ASSERTION and REASON are TRUE and Reason is CORRECT EXPLANATION of Assertions. 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 Reason are false. Answer :A

Discussion

20496.	Question : Assertion: Polyploidy is very common in the member of Filicophyta. Reason: It is due to the development of gametophytes directly from sporophyte without meiospore formation.
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, but the Reason is not the correct explanation of the Assertion. If Assertion is true, but Reason is FALSE. If both Assertion and Reason are false. ANSWER :A

Discussion

20497.	Question : Assertion : Plasma membrane is a permeable membrane.Reason : Both solute and solvent can pass through semipermeable membrane.
Answer» If both ASSERTION and REASON are TRUE and Reason is CORRECT EXPLANATION of Assertions. 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 Reason are false. Answer :D

Discussion

20498.	Question : Assertion : Plants with poor seed viability and prolonged seed dormancy reproduce mostly by vegetative methods. Reason :Vegetative propagation is applied for production of an unlimited number of plants within a relatively short time
Answer» If both Assetion 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 explanation of the Assertion If Assertion is true but the Reason is false If both Assertion and Reaon are false Answer :B

Discussion

20499.	Question : Assertion: Plants possessing C_(4)- pathway of carbon fixation have a higher net primary productively than the C_(3)-pathway possessing plants. Reason: For each unit weight of fixed carbon, C_(4)-pathway possessing plants require less water than C_(3) pathway possessing plants. Reason: For each unit weight of fixed carbon, C_(4)-pathway possessing plants require less water than the C_(3)- pathway possesing plants.
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 explanation of the Assertion. If Assertion and Reason are true but Reason is not a correct explanation of the Assertion. If Assertion is true but the Reason is FALSE. Answer :B

Discussion

20500.	Question : Assertion : Plants lead to the formation of different plants bodies-haploid gametophyte and diploid sporophyte Reason : In plants, both haploid and diploid cells can divide by mitosis.
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 but reason is not the correct explanation of the assertion If assertion is true but reason is false If both assertion and reason are false Solution :Plants LEADS to the formation of different PLANT bodies-haploid gametophyte and DIPLOID SPOROPHYTE because in plants, both haploid and diploid cells can be DIVIDED by mitosis.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Assertion : Tendons are very tough and inelastic. Reason: Tendons join the muscles to the bone.

Question : Assertion : Synaptic knob of axon has large number of synaptic vesicles. Reason: Conduction of nerve impulse is always from axon to dendron.

Question : Assertion : Substrate for photorespiration is glycolate.Reason: Glycolate acts as a respiratory substrate during during photorespiration as O_(2) amount increases during photosynthesis.

Question : Assertion. Stimulus is interpreted by the brin and not by sense organs. Reason. Sense organs act as transducers, transforming the stimulus energy into impulse energy.

Question : Assertion : Staminal tube is present in Malvaceae. Reason : It is due to monoadelphous condition.

Question : Assertion. Stamens are 6, polyandrous and tetradynamous in Brassica. Reason. Stamens are arranged in two whorls with lateral two in outer whorl, and four in inner whorl with anteroposterior median pairs showing tetradynamous condition. Stamens are free.

Question : Assertion. Stamens are syngenesious in Compositae. Reason. Filaments are fused and anthers are free in one group.

Question : Assertion: Sponger have body organization of cellular level' Reason: There is some physiological division of labour.

Question : Assertion :- Sperm entrycausesa rearrangementofmaterialsin theooplasm . Reason:-Pathof themalepronucleustoward thefemalepronucleusis makedin theovumas a copulationpath .

Question : Assertion. SNS slows down peristalsis. Reason. Parasympathetic nervoussystem does the same.

Question : Assertion : Silver fish shows complete metamorphosis. Reason : In the life history of silver fish, there are four stages : Egg to Larva to Pupa to Adult

Question : Assertion : Serum cannot clot the blood. Reason: Serum is obtained from blood plasma minus blood-clotting proteins like prothrombin and fibrinogen.

Question : Assertion : Series of reactions in TCA cycle takes place in mitochondria.Reason : Mitochondrial envelope contains all the respiratory enzymes required for respiratory reactions.

Question : Assertion : Senescence occurs in all non-meristematic cells Reason :Meristems are potentially immortal.

Question : Assertion : Senescence is the time when age associated defects are manifested Reason :Certain genes may be undergoing sequential switching on and off during one's life

Question : Assertion : Secretion of ADH is controlled by osmotic pressure of blood. Reason : Changes in osmotic pressure are noted by osmoreceptors present in the hypothalamus.

Question : Assertion. Secondary xylem formed during spring is called spring wood and secondary xylem formed in autumn is called autumn wood. Reason . Spring wood and autumn wood is easily demarcated and leads to the formation of annual rings.

Question : Assertion: Scientific names have been standardized through ICBN. Reason: First international botanical congress was held in Paris in 1967.

Question : Assertion : Saliva secretion is a reflex action. Reason : Saliva secretion is controlled by only brain and not the hormones.

Question : Assertion. RQ indicates the type of substrate oxidized in cell respiration. Reason. Floating respiration uses carbohydrates.

Question : Assertion: root pressure is largely responsible for ascent of sap in herbaceous plants Reason:root pressure is caused due to diffusion pressure gradient and is maintained by the activity of living cells

Question : Assertion root cells have lower water potential than leaf cellls Reason root cells have greater solute concentration

Question : Assertion : Rhizopus does not form zygospores. Reason : It shows heterothallism.

Question : Assertion: Renal cells are involved in stimulating the formation of RBCs. Reason: The juxtaglomerular cells of kidney produceerythropoietin.

Question : Assertion : Red and blue light support the highest rate of synthesis. Reason: These are the only wavelengths reaching from the sun.

Question : Assertion: Red muscles depend on anaerobic process for energy. Reason: Red muscles have few number of mitrochondira in them

Question : Assertion : RBC production is regulated by kidney. Reason : Erythropoietin reaches red bone marrow.

Question : Assertion : Recently, the government of india institued the Amrita Devi Bishnoi Wildlife Protection Award. Reason : We can speed up the reforestation by planting trees.

Question : Assertion. Quiescent centre of shoot apex is hemispherical in shape. Reason. Quiescent centre becomes hemispherical due to more growth in the centre and less growth in the periphery.

Question : Assertion: Rate of extinction of wildlife has become rapid in the last one hundred years. Reason: Unplanned human activities like population explosion, deforestation, industrialization, hunting, etc. have destroyed the natural habitats of many spp. of wildlife

Question : Assertion : Purple cabbage leaves do not lose their colour in cold water but do so in boiling water.Reason : Plasma membrane becomes impermeable in boiling water and pigments come out.

Question : Assertion: PTH is a hypercalcemic hormone. Reason: Thymus degenerates in old individuals.

Question : Assertion. Quiescent centre is located in root-apex. Reason. Cells are highly lignified and are dead.

Question : Assertion. Protoplasmicrespirationcan not be carried on for long. Reason. It breaks down cell's own material (proteins) and produces toxic ammonia.

Question : Assertion : Proteins are linear polymers of long chains made up of amino acids. Reason: Amino acids are called building blocks of proteins.

Question : Assertion : Proteins are commonly called body building biomolecules. Reason : Proteins act as enzymes which regulate the metabolism.

Question : Assertion : Proteins, peptides and DNAs of pattrogenic organisms are used to make subunit vaccines. Reason : Subunit vaccines are pure, stable and safe.

Question : Assertion : Protein and fat digestion are very fast in small intestine of man. Reason : Pancreatic juices contain strong proteolytic and lipolytic enzymes.

Question : Assertion. Prokaryotic cells lack cyclosis in their cytoplasm. Reason. Eukaryotic cells lack respiratory enzymes in the plasmalemma.

Question : Assertion. Primary xylem is exarch in roots and endarch in stems. Reason. Exarch condition of xylem facilitates inflow of water from cortex whereas endarch condition favours ascent of sap

Question : Assertion Primary cell wall is permeable whereas secondary cell wall is impermeable Reason Primary cel wasll is made up of cellulose whereas secondary cell wall is made up of lignin

Question : Assertion.Presenceof flavin nucleotideis essential for the activity of some enzymes. Reason. Flavin nucleotide isan activator of these enzymes.

Question : Assertion : Presence of connective tissue inside the brain is essential for conduction of nerve impulse. Reason : Connective tissue hold together th nerve cells of brain.

Question : Assertion : Potometer is used to measure the rate of transpiration.Reason : It is based on principle that water lost in transpiration is equal to water absorbed.

Question : Assertion: Polyploidy is very common in the member of Filicophyta. Reason: It is due to the development of gametophytes directly from sporophyte without meiospore formation.

Question : Assertion : Plasma membrane is a permeable membrane.Reason : Both solute and solvent can pass through semipermeable membrane.

Question : Assertion : Plants with poor seed viability and prolonged seed dormancy reproduce mostly by vegetative methods. Reason :Vegetative propagation is applied for production of an unlimited number of plants within a relatively short time

Question : Assertion : Plants lead to the formation of different plants bodies-haploid gametophyte and diploid sporophyte Reason : In plants, both haploid and diploid cells can divide by mitosis.