Question

Assertion (A): Tallness of a pea plant is controlled by an enzyme.

Reason (R): The gene for that enzyme makes proteins which help the plant to be tall.

विकल्प

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

• Both A and R are true, and 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:

A pea plant’s height is determined by genes, specifically alleles of a gene that regulate protein production. The tallness gene encodes proteins, often enzymes, that affect plant development processes. Enzymes are proteins that catalyse biological events, such as cell elongation and division, which help plants grow taller.