Related InterviewSolutions

• Given below are assertion and reason. Assertion. When the ambient temperature is high and the soil contains exces of water, the plants tend to loss water in the form of droplets from lenticels Reason . Root pressure regulates the rate of loss of water from lenticels .A. if both are true with reason being correct explanation (A),B. both true but reason is not correct explanation (B),C. Assertion is ture but reason is wrong (C),D. both are wrong (D),
• Unloading of phloem at sink includesA. passive transportB. diffusionC. osmosisD. active transport
• Phloem loading and unloading process are respectivelyA. Active , PassiveB. Passive , ActiveC. Active , ActiveD. Passive , Passive
• Assertion most mineerlals must enter the rot by active absorption into the cytoplasm of epidermal cell Reason Thius transportation needs energy in the form of ATP some ions also move into the epidermal cells passivelyA. If both Assertion and Reason are true and the Reason is a correct expanation of the AssertionB. If both Assertion and Reason re true but Reason is not a correct eplanatin of the AssertionC. If Assertion is true but the Reason is falseD. If both Assertion and Reason are false
• Assertion: The chemical potential of pure water at normal temperature and pressure is zero. Reason: In soluton, value of water potential is always positive.A. If both Assertion and Reason are true and the Reason is a correct expanation of the AssertionB. If both Assertion and Reason re true but Reason is not a correct eplanatin of the AssertionC. If Assertion is true but the Reason is falseD. If both Assertion and Reason are false
• Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material (A) Easily translocated (B) Chemically non-reactive (C) Easily digested by animals (D) Osmotically inactive (E) Synthesized during photosynthesis The useful proeprties ar :A. II and IIIB. II and IVC. I, III and VD. I and V
• Starch is insoluble in water yet it is accumlated in large quantities in potato becauseA. It is synthesised in potato fuber itselfB. It is translocated from the leaves to the potato tuber in the form of sugarC. Soil micro-organism deposit starch in tuberD. It is useful consumption
• If cohesion-tension transpiration pull theory is correct, a break in water colimn shouldA. have no effect at allB. increase the rate of photosynthesisC. increase the water contents of leavesD. cause the mesophyll cells to become flaccid and result in wilting of leaves
• The basic features of cohesion-tension theory are I. continuous water column. II. Cohesive and adhesive properties. III. Transpiration pull. IV. Imbibitional force.A. Only IIB. II and IIIC. Only ID. I, II and III
• The principal by which blotting papar absorbs water isA. Capillary actionB. Transpiration pullC. Root pressureD. Absorptive capacity