- Leaves are the green parts of a plant with stomata for gaseous exchange.
- Leaves have chlorophyll to trap sunlight energy and manufacture its starch.
- Leaves also form the shoot system of a plant.
- A leaf is fixed between two internodes on a plant stem or branch.
Parts of leaf
Functions of each part of a leaf.
- It has a surface area for easy trapping of sunlight energy by the help of chlorophyll
- It’s where the stomata are found.
- It helps in the manufacturing of starch
- It’s called stoma for singular and stomata for plural.
- They are small holes on the leaf where gaseous exchange takes place.
- They also open to allow water escape during the process of transpiration.
- The stomata also let in carbondioxide by diffusion during day time and oxygen during night time.
- Transport water and nutrients from the leaf stalk to other parts of the leaf.
- They are hollow to allow distribution of water and nutrients within the leaf
- collects manufactured food from all parts of a leaf to the midrib
- It’s the sharp tip part of a leaf to provide protection to the leaf
Leaf stalk / petiole
- This provides attachment of the leaf to stem or a branch.
- Supplies water to the leaf from the branch or stem.
- Attaches the leaf to the stem or branch.
Note: there are mainly two processes that take place in plant leaves namely;
- Photosynthesis and