Question

The pressure that develops in roots due to the metabolic activities of living cells is

• A. Turgor pressure
• B. Osmotic pressure
• C. Root pressure
• D. Diffusion pressure

Answer 1

Answer: (C)

Root pressure

a) When water enters the cell of a plant, the cytoplasm exerts an outward pressure and that pressure is called turgor pressure. Cell wall is rigid and flexible therefore exerts an equal and opposite wall pressure against the expanding protoplasm.

b) Osmotic pressure is the pressure which stops the movement of a pure solvent by the osmosis to a given solution in contact

c) The pressure that develops in roots due to the metabolic activities of living cells is root pressure. It is measured by auxanometer.

d) The potential ability of a substance to move from a region of high concentration to a region of low concentration at a constant, temperature end atmospheric pressure is called diffusion pressure.

So, the correct answer is option C.