Question

Observe the given figures of three different plant tissues and select the correct option.

• A. 'a' and 'b' consist of living cells while 'c' consists of dead cells.
• B. Cytoplasm is present in cells of 'a' while it is absent in cells of 'b' and 'c'.
• C. Cell walls of 'a' 'b' and 'c' bear uniform thickening of suberin.
• D. 'a' provides mechanical strength to the plant while 'b' and 'c' serve as storage tissues.

Answer 1

The correct option is A 'a' and 'b' consist of living cells while 'c' consists of dead cells.

(a) Parenchyma tissue is composed of living cells that are thin-walled and unspecialized in structure. Parenchyma cells make up the bulk of the soft parts of plants, including the insides of leaves, flowers and fruits.

(b) Collenchyma cells support the plant. These cells are characterized by thickenings of the wall and they are alive at maturity. They tend to occur as part of vascular bundles or in the corners of angular stems.

(c) Sclerenchyma cells support the plant. They often occur as bundle cap fibres. Sclerenchyma cells are characterized by thickenings in their secondary walls. They are dead at maturity.

So, the correct answer is option A.