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प्रश्न
What is the stomatal apparatus?
उत्तर
- The structures called stomata are found in the leaf's epidermis. Gaseous exchange and transpiration are controlled by stomata.
- Each stoma is made up of two guard cells, which are bean-shaped cells that surround the stomatal orifice. Guard cells have thin outer walls that face away from the stomatal pore and significantly thickened interior walls that face the pore. The guard cells control the opening and shutting of stomata and have chloroplasts.
- Occasionally, a small number of epidermal cells near the guard cells develop into subsidiary cells due to their specific size and form. The term "stomatal apparatus" refers to the guard cells, surrounding subsidiary cells, and the stomatal aperture collectively.
APPEARS IN
संबंधित प्रश्न
Explain the structure of stomata with a labelled diagram.
In Gymnosperms, the activity of sieve cells are controlled by ______.
Grafting is successful in dicots but not in monocots because the dicots have ______.
Specialised epidermal cells surrounding the guard cells are called
Trichomes are ______.
Match the following and choose the correct option from below
| Column I | Column II |
| A. Cuticle | i. Guard cells |
| B. Bulliform cells | ii. Single layer |
| C. Stomata | iii. Waxy layer |
| D. Epidermis | iv. Empty colourless cell |
Identify the simple tissue system from the following.
What is present on the surface of the leaves which helps the plant prevent loss of water but is absent in roots?
Below is a list of plant fibres. From which part of the plant these are obtained
Cotton
Epidermal cells are often modified to perform specialized functions in plants. Name some of them and the function they perform.
Plants require water for their survival. But when watered excessively, plants die. Discuss.
The stomatal pore is guarded by two kidney shaped guard cells. Name the epidermal cells surrounding the guard cells. How does a guard cell differ from an epidermal cell? Use a diagram to illustrate your answer.
