| 1. | Dumb-bell shaped | 2. | Kidney shaped |
| 3. | Rectangular | 4. | Barrel-shaped |
Specialised epidermal cells surrounding the guard cells are called ?
| 1. | subsidiary cells | 2. | bulliform cells |
| 3. | lenticels | 4. | complementary cells |
| 1. | subsidiary cells | 2. | bulliform cells |
| 3. | lenticels | 4. | complementary cells |