Question

Which one of the following tissues does not possess living protoplasm?

• A. Collenchyma
• B. Sclerenchyma
• C. Tracheids
• D. Both (B) and (C)

Answer 1

The correct option is D

Both (B) and (C)

The correct option is D:

Explanation of correct option:

1. Sclerenchyma cells are dead cells.
2. They are long, thin, and narrow-shaped with thickened walls without any internal space.
3. They do not have any protoplasm at maturity.
4. Tracheids are dead, tapered, and long lignified cells that are present in the xylem of plants.
5. They are one of the water-conducting components in the xylem, which doesn't have any protoplasm.

Explanation of incorrect option:

Option A:

1. Collenchyma is a living tissue they have a thick cell wall that is made up of pectin and cellulose.
2. This cell sometimes contains cytoplasm, and they possess living protoplasm also.

Final Answer: Thus, Sclerenchyma and tracheid do not possess living protoplasm.