Last seen: Mar 10, 2022
Correct answer: (b) Root hair, cortex, endodermis, pericycle, protoxylem, metaxylem Explanation: Water is absorbed from soil by root hair. This is...
Correct answer: (a) increases Explanation: If a pressure greater than atmospheric pressure is applied to pure water, the water potential increase...
Correct answer: (d) remain always open
Correct answer: (d) Diffusion depends on the type of living system. Explanation: Diffusion is a slow process, it is not dependent on the living sy...
Correct answer: (c) hypertonic Explanation: In hypertonic solution, external solution is more concentrated as compared to cytoplasm. Cells shri...
Correct answer: (d) all of these Explanation: Diffusion rate is affected by the gradient of concentration, permeability of the membrane separating...
Correct answer: (b) Symport Explanation: In symport, two types of molecules cross the membrane in the same direction.
Correct answer: (c) negative Explanation: Ψs is always negative.
Correct answer: (a) Transpiration Explanation: With the increase in humidity in atmosphere, rate of transpiration decreases.
Correct answer: (c) Movement of water from cell A to B
Correct answer: (a) Pascal Explanation: Psi or ψ is expressed in pressure units e.g. pascals.
Correct answer: (c) B, C and D Explanation: Pumps in active transport are proteins that bind molecules to pass them through the membrane.
Correct answer: (c) imbibition Explanation: Imbibition is a type of diffusion in which water is absorbed by solids or colloids which leads to incr...
Correct answer: (d) Diplotene Explanation: Synaptonemal complex dissolves in diplotene stage of Prophase I.
Correct answer: (a) Anaphase
Correct answer: (b) Early metaphase Explanation: Chromosomes are positioning towards the equator. Nuclear envelope is disintegrated.
Correct answer: (c) G2 Explanation: In G2 phase of cell cycle, proteins are synthesised for mitosis and cell growth continues.
Correct answer: (c) Chromosome
Correct answer: (b) Nucleolus and nuclear envelope
Correct answer: (d) Meiotic prophase