Question

Root cap regenerates or dead torn cells of root cap are replaced by the activity of

• A. Dermatogen
• B. Plerome
• C. Periblem
• D. Calyptrogen

Answer 1

The correct option is D

Calyptrogen

The correct option is D

Explanation of the correct option:

1. Calyptrogen refers to a rapidly dividing cell layer that is visible at the tip of a plant.
2. The calyptrogen layer forms new parenchyma cells that replace the cells of the damaged root cap.

Explanation of the incorrect option:

Option A:

1. In plants, the dermatogen is the primary meristem that is present at the root and shoot tips of the plant.
2. It is developed from the apical meristematic tissues.
3. Dermatogen develops the epidermis layer.

Option B:

1. Plerome refers to the innermost layer.
2. It is a stellar region in the root tip.
3. The plerome gives rise to vascular bundles.

Option C:

1. Periblem is a primary meristem that is located between the plerome and dermatogen.
2. It is the cortical region of the root tip.
3. The periblem generates the cortex layer.

Final answer: Root cap regenerates or dead torn cells of root cap are replaced by the activity of calyptrogen.