Question

the direction and rate of osmosis is controlled by​

Answer 1

Answer:

The direction and rate of osmosis depend upon the sum of two forces, pressure gradient(gradient of ψp) and concentration gradient(gradient of ψs). The net force or gradient is determined by the difference in the water potentials of solutions separated by a semipermeable membran

The above questions answer is according to the visual dictionary

Answer 2

Answer:

Osmosis is a special type of diffusion of water through a semi-permeable membrane.

Reason

The net direction and rate of osmosis depends only on the pressure gradient.

Explanation:

Diffusion of water from its pure state(or dilute solution) into a solution (or stronger solution) when the two are separated by a semi-permeable membrane is termed as osmosis. The direction and rate of osmosis depend upon the sum of two forces, pressure gradient(gradient of ψ

p

) and concentration gradient(gradient of ψ

s

). The net force or gradient is determined by the difference in the water potentials of solutions separated by a semipermeable membrane. So, the correct answer is 'Assertion is correct but Reason is incorrect'.