Question

Three characteristics and three functions of collenchyma

Answer 1

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Their main function is to repair. In leaves, they form the mesophyll and are responsible for photosynthesis and the exchange of gases, parenchyma cells in the mesophyll of leaves are specialised parenchyma cells called chlorenchyma cells (parenchyma cells with chloroplasts).
Three characteristics of chlorenchyma cells are Their cells are dead.

Cells are long and narrow.

Cells are empty and devoid of protoplasm.

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Answer 2

Collenchyma

Collenchyma, in plants, support tissue of living elongated cells with irregular cell walls. Collenchyma cells have thick deposits of cellulose in their cell walls and appear polygonal in cross section. The strength of the tissue results from these thickened cell walls and the longitudinal interlocking of the cells.

Characteristics of collenchyma:-

The three most characteristic morphological features of collenchyma are:-

(1) their axially elongated cells;

(2) their cell wall thickenings;

(3) their living protoplasts