science : - Collect different types of leaves around
your surroundings and past diagrame of leaves
Write their uses.
Answers
Answer:
There are two broad categories of leaves – simple and compound, which are further classified into different groups based on their shape, size, their arrangements on the stem, leaves of flowering and non-flowering plants, and various other physical attributes.
The two different types of leaves found in a plant are:
Simple Leaf
When a single lamina is connected to the main stem by a petiole, the leaf is said to be simple. A simple leaf may be incised to any depth but not down to the midrib or petiole. Eg., Guava leaves
Compound Leaf
A compound leaf is a leaf made up of two or more leaflets. In a compound leaf, the midrib of the leaf is branched into different leaflets and is connected by a single petiole. For eg., Pea, palm leaves.
Compound leaves
The compound leaves are further sub-divided into the following types of leaves:
Palmately Compound Leaf
In a palmately compound leaf, the leaflets are attached at the tip of the petiole. Eg., Silk cotton. These can be differentiated into:
Unifoliate: These type of leaves have only one leaflet. Eg., Citrus
Bifoliate: These leaves have two leaflets. Eg., Balanites
Trifoliate: These leaves have three leaflets emerging from the same point. Eg., Oxalis
Quadrifoliate: These leaves have four leaflets arising from the same point. Eg., Marsilea
Multifoliate: This type of leaf has many leaflets arising at a common pint. Eg., Bombax
Pinnately Compound Leaf
In a pinnately compound leaf, the midrib of the leaf is divided into numerous leaflets and all connected by a common axis. Eg., Neem. These can be further differentiated into:
Pinnate: A compound leaf that has an axis on each side of the midrib is known as a pinnate leaf.
Unipinnate: The leaf with leaflets on each side of the axis. Eg., cassia
Bipinnate: Here, a secondary axis bearing the leaflet is produced by the central axis. Eg., Acacia
Tripinnate: Here, a tertiary axis bearing leaflets emerges from the secondary axis. Eg., Moringa
Decompound: Leaf with more than three pinnate. Eg., old leaves of coriander
Parapinnate: A leaf without a terminal leaflet. Eg., Cassia
Imparipinnate: Leaf with an odd terminal leaflet. Eg., Pea
Palmately & Pinnately compound leaf