Question

The parenchyma which contains chlorophyll and performs photosynthesis is called as
A. Collenchyma
B. Sclerenchyma
C. Simple tissue
D. Chlorenchyma

Answer 1

Hint: Chlorenchyma is the parenchymatous tissue that forms the mesophyll tissue of plant leaves and is sometimes also present in stems of various plant species. Chlorenchyma is a type of modified parenchyma.

Complete answer:
- Collenchyma provides support to the tissue of living elongated cells and with irregular cell walls. Collenchyma cells have deposits of cellulose in cell walls and look like polygon cross-sectionally.
- Sclerenchyma is the tissue that makes the plants hard and firm. It provides support to the plants. The two kinds of sclerenchyma cells are fibers cellular and sclereids. Their cell walls contain cellulose, hemicellulose and lignin. Fibers are very long cells found in stems, roots and vascular bundles in leaves.
- Simple tissues are tissue made up of a collection of only one type of cell. They are similar in function and structure.
- The most simple permanent tissue present in all the plants which are isodiametric in morphology as well as physiology is called parenchyma. When the parenchyma consists of chlorophyll, it is called Chlorenchyma.
Hence, option, ‘D: Chlorenchyma’ is the correct answer.

Note: Chlorenchyma cells perform photosynthesis and manufacture food for the plant. They are usually present in the outer cortex of stems. Mesophyll tissue of plant leaves are formed by chlorenchyma.