Give a suitable  explanation for the following

The stomata in most plants are numerous on the lower surface of a leaf as compared to upper surface.

Give a suitable explanation for the following:

Forests tend to bring more rain.

Give a suitable explanation for the following:

On a bright sunny day, the leaves of certain plants roll up.

Define the following term

Potometer

Define the following term

Hydathode

Define the following term

Cuticle

Distinguish between the following pair.

Guttation and bleeding