Question

Assertion (A): Transpiration is a necessary evil.

Reason (R): Transpiration causes water loss but helps in absorption and upward movement of water and minerals.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is the correct explanation of A.

Explanation:

The assertion is true because the famous botanist Curtis described transpiration as a necessary evil since it causes unavoidable water loss while performing indispensable functions. The reason is also true and serves as the perfect explanation because it details this dual nature: though the process wastes more than 98% of absorbed water (the evil part), it simultaneously creates the essential transpiration pull needed for the absorption and upward distribution of water and vital minerals (the necessary part).