Question

Sclereid is a
A. Parenchymatous cell
B. An individual sclerenchymatous cell
C. Collenchymatous cell
D. Chlorenchymatous cell

Answer 1

Hint: Sclereids are a degraded mode of sclerenchyma cells with extremely enlarged, lignified cellular barriers that create small packages of durable coats of tissue in most plants.

Complete Answer:
Let us analyse the given options to find out the correct answer.
Option A: Parenchyma is a kind of simple living tissue that forms a major part of base tissues in plants, where other tissues like vascular tissues are fixed. Therefore, this is an incorrect option.

Option B: Sclereids are a diminished development of sclerenchyma cells with strongly hardened cellular barriers that form tiny packages of permanent coatings of tissue in most plants. A separate sclereid cell is termed as an idioblast. Sclereids are typically seen in the skin, base tissue, and vascular tissue. Therefore this is the correct option.

Option C: Collenchymatous tissue is present as a helping tissue in stems of immature plants. It provides fixed comfort, flexibility, and tensile force to the plant body. Therefore, this is an incorrect option.

Option D: Chlorenchyma produces the mesophyll tissue of plant petals and can also be found in the stems of some plant species. Therefore, this is an incorrect option.

Thus, option B, is the correct answer.

Note: Sclerenchyma is a plant tissue which provides both mechanical strength and durability. Fibres and sclereids are the principal characters of sclerenchyma cells. Most sclerenchyma cells present intrusive germination. The cell walls of sclerenchyma have hardened secondary films made from hemicelluloses, cellulose and lignin.