1. | they are certain adaxial epidermal cells that when flaccid make the leaves curl inwards |
2. | they are certain abaxial epidermal cells that when flaccid make the leaves curl inwards |
3. | they are certain adaxial epidermal cells that when turgid make the leaves curl inwards |
4. | they are certain abaxial epidermal cells that when turgid make the leaves curl inwards |
1. | wide variations in size of vascular bundles in the main veins |
2. | wide variations in size of vascular bundles except in the main veins |
3. | near similar size of vascular bundles in the main veins |
4. | near similar size of vascular bundles except in the main veins |