Give the characteristics and role of the following: (i) Cutin (ii) Suberin (iii) Sclereids
Q. Give the characteristics and role of the following:
(i) Cutin (ii) Suberin (iii) Sclereids
Ans. (i) Cutin : Cutin is a waterproof layer of waxy substance. Epidermis is one cell thick and is covered with cuticle. This cuticle has a variable thickness and is more thicker in xerophytic plants.
(ii) Suberin: It is a complex polymer present in the walls or cork cells. It makes cell wall impervious to gases and water.
(iii) Sclereids: These are sclerenchymatous cells which are short and possess extremely thick lignified walls with long tubular simple pits. They are short and are irregular shaped.
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