Question

Root cap has no role in water absorption because:

• A. it has no direct connection with vascular system
• B. it has no cells contaning chloroplasts
• C. it has no root hairs
• D. it has loosely arranged cells

Answer 1

The correct option is C

it has no root hairs

Correct answer is option C.

Explanation for correct option:

1. The function of root hairs is to collect water and mineral nutrients present in the soil and take this solution up through the roots to the rest of the plant.
2. As root hair cells are absent in root cap water absorption does not take place.

Explanation for incorrect options:

Option A:

1. Root cap is a sheath of cells that protects the meristem from damage as the root tip grows through the soil.
2. It do not have root hairs which are unicellular extensions of root epidermis.

Option B:

1. Chloroplasts are cell organelles which are present in green parts of the plant and help in the process of photosynthesis.
2. Roots can not perform photosynthesis as chloroplasts are absent but it does not affect the water absorption which is dependent on presence of root hairs.

Option D:

Root hair cells are adapted for absorption of water and mineral ions by having a large surface area to increase the rate of absorption.

Final answer: Root cap has no role in water absorption because it has no root hairs.