Table of Contents
What is Stomata ?
Stomata are the tiny openings present on the epidermis of leaves and play an important role in gaseous exchange and photosynthesis.
7 Important Types of Stomata
Stomata is of following types on the basis of number and characteristics of the surrounding subsidiary cells:-
- Anisocytic or Cruciferous.
- Diacytic or Caryophyllaceous.
- Anomocytic or Ranunculaceous.
Structure of Stomata
- Consists of minute pores called stomata surrounded by a pair of guard cells.
- Stomata, open and close according to the turgidity of guard cells.
- The cell wall surrounding the pore is flexible and tough.
- The shape of guard cells usually differs in both monocots and dicots.
- Guard cells are bean shaped, contain chlorophyll and capture light energy.
- Subsidiary cells surround the guard cells.
Functions of Stomata
- Gaseous exchange between the plant and surrounding.
- Helps in transpiration and removal of excess water in the form of water vapor.
- Maintains the moisture balance according to weather by opening and closing.
- Facilitates carbon dioxide uptake and release of oxygen during the process of photosynthesis.