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9. Give reasons:

i) Leaves of some fixed aquatic plants have a waxy coating on them.

A. The fixed aquatic plants have waxy coated leaves so that water does not stay on them.

ii)Underwater plants have narrow leaves.

A. They have narrow leaves which allow the free flow of water.

10. Name the three types of aquatic plants. Give one adaptation of each of them with an example.

A. The three types of aquatic plants are:

1. Floating plants

2. Fixed plants

3. Underwater plants

Adaptations:

Floating plants: Their stems are light and filled with air. eg: Duckweed

Fixed plants: Their stem is long, thin, flexible and hollow. eg: Lotus

Underwater plant: They have flexible stem. eg: Hydrilla