Types of Leaves
Mainly Leaves are of two type: Simple and Compound Leaves. These further divided on the basis of shape, size, and arrangenmnet of Leaves on stem.
Simple Leaves
When main stem is linked to the petiole through a single lamina. Example Guava leaves
Compound Leaves
When midrib is branched into many leaflets and connected through single petiole. These Leaves are divided into two sub-types: Pinnately and palmately compound Leaves.
Pinnately Compound Leaves
In this type of Leaves, midrib is divided into various leaflets and these leaflets are connected by a common axis. These are further divided into following types:
- Pinnate: In this type of Leaves, the midrib is on each side and have only single axis.
- Unipinnate: Leaflets are present on each side of the axis.
- Bipinnate: Leaflets are import from the secondary axis which are produced from the central axis.
- Tripinnate: Leaflets are import from tertiary axis which emerges from the secondary axis.
- Decompound: The leaf which have more than three pinnate.
- Parapinnate: In this type of leaflet the terminal leaflet is absent.
- Imparipinnate: The leaf which have an odd terminal leaflet.
Palmately Compound Leaves
In Palmately Compound Leaves type of Leaves, leaflet is attached to the petiole tip. These are further divided into following types:
- Unifoliate: These Leaves have single leaflet.
- Bifoliate: These consist two leaflets.
- Trifoliate: These consist three leaflets and these three leaflets are arising from single point.
- Quadrifoliate: These consist of four leaflets and all these four leaflets are arising from single point.
- Multifoliate: These leaves are consist of more than four leaflets and all leaflets are arising from same point.
Leaves – Morphology, Types & Modification
Leaves are the lateral appendages of the stem. The primary function of Leaves is to make glucose and produce oxygen by using sunlight, CO2 and H2O via the process known as photosynthesis. The structure of the leaf is composed of three parts including leaf base, lamina, and petiole. There are diverse types of Leaves present which depend upon the type of plant species. Chlorophyll is present in leaves which provides a green color and participates in photosynthesis.
Table of Content
- What are Leaves?
- Morphology of Leaves
- Structure of Leaves
- Types of Leaves
- Modification of Leaves
- Functions of Leaves
- What is Phyllotaxy?
- Key Points on Leaves