Question

Endodermis of dicot stem is also called as a

• A. Bundle sheath
• B. Starch sheath
• C. Mesophyll
• D. Pith

Answer 1

The correct option is B

Starch sheath

The correct option is B.

The explanation for the correct option:

1. In the dicot stem, the innermost layer of the cortex is endodermis which is compactly arranged barrel-shaped cells with no intercellular spaces.
2. The endodermis cells have a rich deposition of starch grains, so referred to as a starch sheath.

The explanation for the incorrect options:

Option A:

A bundle sheath is the layer of cells that forms a sheath around the vascular bundles. It is absent around the vascular bundles of the dicot stem.

Option C:

Mesophyll cells are present in the plant's leaves and are the main centers of photosynthesis. They are absent in the stem.

Option D:

A pith is present in the middle of dicot stems, composed of soft, spongy parenchyma cells. A ring of vascular bundles (xylem and phloem) surrounds the pith.

Final Answer: The endodermis of the dicot stem is also called a Starch Sheath.