What are the adaptation of leaf for photosynthesis?
Leaves have a large surface area to absorb more sunlight.
Leaves are thin, hence carbon dioxide has only a short distace to diffuse into leaf cells.
The internal structure of the leaf is also adapted to promote efficient photosynthesis:
Cuticle: - Is non-cellular, thin, water proof and transparent. It allows light to pass through while protecting the leaf.
Thin and transparent epidermis: - It allows more light to reach the palisade cells below.
Palisade mesophyll: - has cells vertically arranged such that many can fit into a small space. The cells have large number of chloroplasts which helps to absorb more light.
Spongy mesophyll: - Have large air spaces for fast diffusion of gases to and from the photosynthesizing cells.
Veins (Vascular bundles): - They act as drain pipes distributing raw materials to the leaves and conducting away manufactured food to other parts of a plant.