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1. The outermost protective covering of a plant body is called

2. The main function of the epidermis is to

3. The epidermis is usually made up of

4. In plants living in dry habitats, the epidermis is

5. The outer surface of aerial plant parts is covered by

6. The protective outer coating of leaves and stems is called

7. The small pores present in the epidermis of leaves are called

8. The opening and closing of stomata are controlled by

9. The function of stomata is

10. The epidermal cells of roots help in

11. Epidermal cells of roots have

12. The thick, waxy coating on desert plant epidermis is composed of

13. As plants grow older, epidermis is replaced by

14. The cells of cork are

15. The walls of cork cells contain