The diagram given below shows a type of tropism. Answer the questions that follows.

(a) What do A and B indicate?

(b) Name the tropic movements shown by parts A and B.

(c) Why do A and B show these types of movement?

(a)

• A → roots growing towards earth's gravity
• B → stem growing towards light

(b)

• A → geotropism
• B → phototropism

(c) Roots exhibit positive geotropic movement as they seek to absorb water and minerals from the soil. In contrast, shoots display negative geotropic movement, aiming to grow upward towards sunlight to facilitate photosynthesis in the leaves.