Question

What are some adaptations of the internal structure of the leaf?

Answer 1

Adaptations of the structure of leaves:

1. Leaves are adapted both internally and externally to facilitate photosynthesis and gaseous exchange.
2. External adaptations include a large surface area for photosynthesis.
3. They also have stomata on the surface for the exchange of gases.

Internal adaptations in the structure of leaves:

Type of adaptation	Function
A transparent and thin epidermis	Allows more light to reach palisade cells.
The cuticle is thin and made of wax	Protects the leaf from infection and prevents water loss without blocking light.
Palisade cell layer at the top of leaves	Absorb more light, and increases the photosynthesis rate. Palisade cells possess several chloroplasts for absorbing all the available light.
Spongy layer	Air spaces allow the diffusion of gases through leaves.