Question

difference between stomata and hydathodes

Answer 1

Difference # Stomata:

1. They are found in epidermis of leaves, stems and fruits.

2. They are surrounded by pairs of chlorophyllous guard cells.
3. They are subtended by a substomatal cavity.

4. The stomata are surrounded by subsidiary epidermal cells.

5. The stomata have no connection with main ends.

6. Their opening and closing is regulated by guard cells.
7. They are concerned the process of ‘transpi­ration
Difference # Hydathodes:

1. They are found on the tips and margins of young leaves at their vein endings.

2. They are surrounded by a ring of cuticularised achlorophyllous cells.

3. They are subtended by a mass of loosely arranged cells.

4. Subsidiary cells are absent.

5. They are situated on the vein ends.

6. They are always open.

7. They are concerned with the process of ‘guttation’.