Q5 of 27 Page 21

Give reasons to the following (AS 1)

Epidermis gives protection

The dermal layer protects the plants from loss of water, mechanical damage and invasion by parasitic and disease-causing organisms. In big trees, the dermal tissue forms several layers above the epidermis known as bark. In desert plants, it may be even more thick and waxy.


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4

Compare and contrast the following (AS 1)

Meristematic tissue and Dermal tissue.

 5

Give reasons to the following (AS 1)

Xylem is a conductive tissue

 6

“Bark cells are impervious to gases and water”. What experiment will you perform to prove this? (AS 3)

 7

Chlorenchyma, Aerenchyma and storage tissue – Even though these three are parenchyma. Why do they have special names? (AS 1)