Question

Question 1
Which of the following tissues has dead cells?

(a) Parenchyma
(b) Sclerenchyma
(c) Collenchyma
(d) Epithelial tissue

Answer 1

Correct answer is option (b) Sclerenchyma

1. Sclerenchyma is a type of permanent tissue found in plants.
2. Cells are usually dead without protoplasts.
3. The cell wall is thick and lignified with a few or numerous pits.
4. They possess both primary and secondary cell walls.
5. The secondary walls are rich in lignin along with cellulose, hemicellulose and pectin.
6. The intercellular spaces between the cells are absent.
7. They are generally found in the parts of plants that have stopped growing.