Question

What is the difference between sclerenchyma and parenchyma tissues?

• A. Parenchyma- Cells are thin walled and unspecialised, Sclerenchyma- Cells are thick walled and lignified
• B. Parenchyma- Cells are thick walled and lignified, Sclerenchyma- Cells are thin walled and unspecialised
• C. Parenchyma- Cells are thick walled and unspecialised, Sclerenchyma- Cells are thick walled and lignified
• D. Parenchyma- Cells are thin walled and specialised, Sclerenchyma- Cells are thick walled and lignified

Answer 1

The correct option is A Parenchyma- Cells are thin walled and unspecialised, Sclerenchyma- Cells are thick walled and lignified

Parenchyma:
(1) Cells are thin walled and unspecialised. (2) These are living cells. (3) Cells are usually loosely packed with large intercellular space. (4) Stores nutrients and water in stem and roots. (5) Some cells contain chlorophyll, called as chlorenchyma and perform photosynthesis. Other cells have large air cavities, called as aerenchyma, which provide buoyancy to the hydrophytic plants.
Sclerenchyma:
(1) Cells are thick walled and lignified. (2) Tissues are made up of dead cells. (3) No intercellular spaces between the cells are found. (4) Provides strength to the plant parts. (5) The cells are long and narrow, make the plant hard and stiff. The tissue is present in the stem around vascular bundles, in veins of leaves and hard covering of seeds and nuts.

So, the correct answer is 'Parenchyma- Cells are thin walled and unspecialised, Sclerenchyma- Cells are thick walled and lignified'