A waxy thick layer which prevent water loss is
1. Cuticle
2. Guard cell
3. Epidermis
4. Stomata
Epidermis in plant is generally
1. | Single layered |
2. | Double layered |
3. | Triple layered |
4. | Present in patches |
The most important function of the trichomes is:
1. | They prevent water loss due to transpiration |
2. | They prevent herbivory |
3. | They are sensory structures that decipher the wind velocity and direction |
4. | They play an important part in pollination of plants |
1. | Dumb-bell shaped | 2. | Kidney shaped |
3. | Rectangular | 4. | Barrel-shaped |
Cuticle is not found in
1. Stem
2. Branches
3. Leaves
4. Roots
1. | subsidiary cells | 2. | bulliform cells |
3. | lenticels | 4. | complementary cells |
Mark the incorrect statement with respect to guard cells in stomata
1. | In grasses these are dumb-bell shaped |
2. | They possess chloroplasts |
3. | Regulate opening and closing of stomata |
4. | Outer walls are thick and inner walls are thin in dicots |
Root hairs are ____________ and formed from __________zone of root.
1. | unicellular, maturation |
2. | multicellular, elongation |
3. | multicellular, maturation |
4. | unicellular, elongation |
Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified:
A | B | C | D | |
1. | Guard cell | Stomatal aperture | Subsidiary Cell | Epidermal Cell |
2. | Epidermal Cell | Guard Cell | Stomatal aperture | Subsidiary cell |
3. | Epidermal Cell | Subsidiary Cell | Stomatal aperture | Guard Cell |
4. | Subsidiary Cell | Epidermal Cell | Guard Cell | Stomatal aperture |
Epidermal cells are parenchymatous with __________ amount of cytoplasm lining, the cell wall and _______ vacuole.
1. | Small, large | 2. | Large, small |
3. | Small, no | 4. | Large, no |