Structure of Stomata
The stomata are made up of tiny pores termed stoma that is encircled by two guard cells. The turgidity of guard cells determines how frequently stomata open and close. The pore's surrounding cell wall is resilient and adaptable.
- Both monocots and dicots typically have different guard cell shapes, but the mechanism is the same in both.
- Guard cells have chloroplasts and are shaped like beans. They absorb light and have chlorophyll in them.
- The guard cells are surrounded by the subsidiary cells. They are the accessory cells to guard cells and are found in the epidermis of plants. They guard epidermal cells when guard cells enlarge during stomatal opening because they are situated between guard cells and epidermal cells.
- About 300 stomata are present on a square mm of leaf surface on average.
Functions of Stomata
- Closing and opening the pores in the leaves primarily serves to exchange gases.
- It helps to remove extra water from the leaves.
- During photosynthesis, it absorbs carbon dioxide while expelling oxygen.
- It aids in tracking the transpiration-based movement of water.
What are the functions of stomata?
The process of stomata closing and opening aids in the exchange of gases. Stomata are used to expel extra water from leaves. The stomata absorb carbon dioxide while expelling oxygen during photosynthesis.