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What is stomatal apparatus? Explain the structure of stomata with a labelled diagram.
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Stomata are structures present in the epidermis of leaves. Stomata regulate the process of transpiration and gaseous exchange. Each stoma is composed*of two bean shaped cells known as guard cells which enclose stomatal pore. The outer walls of guard cells (away from the stomatal pore) are thin and the inner walls (towards the stomatal pore) are highly thickened. The guard cells possess chloroplasts and regulate the opening and closing of stomata. Sometimes, a few epidermal cells, in the vicinity of the guard cells become specialised in their shape and size and are known as subsidiary cells. The stomatal aperture, guard cells and the surrounding subsidiary cells are together called stomatal apparatus.
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Question Text | What is stomatal apparatus? Explain the structure of stomata with a labelled diagram. |
Topic | Anatomy of Flowering Plants |
Subject | Biology |
Class | Class 11 |
Answer Type | Text solution:1 |
Upvotes | 57 |