Question

Plant length is increased by the activity of -----------------------

• A. Apical meristem
• B. Lateral meristem
• C. Cambium
• D. All of the above

Answer 1

The correct option is A

Apical meristem

The correct option is A.

Explanation of the correct option:

1. An apical meristem is a meristem that is present at the tip of a plant root or shoots and produces auxins that are responsible for the increase in the length of the plant.
2. These are associated with the primary growth of the plant.

Explanation of the incorrect option:

Option B:

1. Lateral meristem is a meristem that is present at the longitudinal axis of the root or shoots of the plant and is responsible for the thickening of the root.
2. Lateral meristem is not associated with the increase in length of the plants.

Option C:

1. Cambium is the meristem tissue that helps in the secondary growth of plants.

Final answer:

1. Plant length is increased by the activity of apical meristem.