Stomatal Movements
Stomatal Movements
Stomata are the tiny pores present on the outer surface or epidermis of the leaves and in some cases also on the stem. These pores help in the exchange of gases,transpiration and photosynthesis. The opening and closing of stomata is controlled by Abscisic acid hormone.
Structure of Stomata
A stomata is consist of subsidiary cells, Guard cells and stomatal aperture. Subsidiary cells are the cells that surrounds the guard cells.Based on the number of subsidiary cells stomata can be of different types. Guard cells are bean shaped cells that surrounds the stomatal aperture. These cells regulate the closing and opening of stomata. Stomatal aperture is a tiny pore present on the surface through which exchange of material takes place.
Functions of Stomata
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The closing and opening of stomata depends on the | |||
| Right Option : B | |||
| View Explanation | |||
The opening and closing of stomata is controlled by which hormone ? | |||
| Right Option : C | |||
| View Explanation | |||
Except the functions like exchange of gases and photosynthesis stomata also regulate the exchange of water vapours.This process of loss of water through stomata is known as | |||
| Right Option : B | |||
| View Explanation | |||
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