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Question

Which of the following features distinguishes dicot root from monocot root?


A

Absence of vascular bundles

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B

Presence of open vascular bundles

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C

The presence of a well-developed pith

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D

Presence of radially arranged vascular bundles

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Solution

The correct option is C

The presence of a well-developed pith


The correct option is C.

Explanation for Correct option:

  1. Dicot roots and stems have quite different anatomical structures.
  2. In a monocot root, the pith is a sizable, fully-formed area of the monocot root and is composed of parenchymatous tissue with thin walls.
  3. There are a lot of grains of starch in it.
  4. On the other hand, the dicot root is comprised of polygonal parenchymatous cells, is tiny, and is placed in the center.
  5. It serves as a food storage container.

Explanation for Incorrect option:

Option A:

Vascular bundles are present in both dicot and monocot roots.

Option B:

Open vascular bundles can be seen in dicot roots.

Option D:

Dicot roots are oriented radially.

Final answer: The presence of a well-developed pith distinguishes the dicot root from the monocot root.


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