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Question

Endodermis of dicot stem is also called as a


A

Bundle sheath

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B

Starch sheath

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C

Mesophyll

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D

Pith

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Solution

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.


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