Question

From which layer of the plant does epidermis of stem produced?

• A. Procambium
• B. Ground meristem
• C. Calyptrogen
• D. Protoderm

Answer 1

The correct option is D

Protoderm

The correct option is D.

Explanation for correct option:

1. The epidermis is produced from protoderm.
2. It is the outermost layer of the stem.
3. Protoderm is the thin outermost layer of meristem in embryos and developing points of stems and roots.

Explanation for incorrect options:

Option A:

1. Procambium is the layer that gives rise to the vascular tissues of the plant.

Option B:

1. Ground meristem gives rise to cortex, pith, and rays.
2. It is the basic primary tissue of the tip of the root or stem excluding vascular bundles and epidermis.

Option C:

1. Calyptrogen is a layer of readily dividing cells at the tip of the plant root.
2. It forms the root cap.

Final answer: The epidermis of the stem originates from the protoderm.