Question:
Assertion (A) : Passive transport takes place either by diffusion or osmosis.
Reason (R) : Passive transport is a mode of transport which takes place without
expenditure.
Answer:
Both the statements (A) and (R) are true.
Both diffusion and osmosis involves movement of particles along the concentration gradient (i.e. from their region of higher concentration to their region of lower concentration). In moving along the concentration gradient no energy is spent. Hence, these processes are passive.
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