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Question

Collenchyma is considered a living tissue because


A

It has cell walls

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B

It has cellulose in its cell walls

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C

It has protoplasm

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D

It has angular thickenings

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Solution

The correct option is C

It has protoplasm


The correct option is C:

Explanation of the correct option:

  1. Collenchyma provides support to shoots and leaves
  2. It has irregular and elongated cells
  3. Collenchyma has protoplasm which comprises the living components of the cell like the nucleus and the cell organelle
  4. Sclerenchyma also provides support but the cells lose all their cell organelles at maturity and only contain lignin and cellulose because of which the cell wall becomes thick and woody.

Explanation of the incorrect option:

Option A:

All the plant tissues have cell walls.

Option B:

Cellulose is present even in the cell walls of the sclerenchyma which is dead tissue.

Option D:

Cell thickening happens at the corner of the cells of collenchyma this is called angular thickening but this doesn’t make it a living tissue.

  1. Final Answer: Hence, collenchyma is considered a living tissue because it has protoplasm.

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