In this post, you will learn around the interpretation of a leaf, parts of a leaf, forms of leaves and also the primary features of leaves.

You are watching: External parts of a leaf and their functions


The leaf is one of the a lot of necessary components of a plant. Leaves are responsible for creating food for the plant with a procedure dubbed photosynthesis. The leaves of different plants vary commonly in size, form, and also shade.


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Functions of Leaves


Photosynthesis:

The leaves make food for the plant by the process of photosynthesis. The leaf is likewise well-known as the food factory of the plant.

The leaves contain chloroplast, which is filled through a green pigment dubbed chlorophyll. Leaves use this green pigment to create food by converting the energy in sunlight, water and carbon dioxide right into chemical energy that the plant can eat.

Throughout that process, the leaves absorb Carbon Dioxide from the setting and also rerevolve oxygen earlier to the environment. <even more on photosynthesis>

Transpiration:

Plants store taking in water from the soil all the moment through the root. Plants use some of the water in the process of making food. The excess water evaporates from the surface of the leaves through stomata. This process of water removal is referred to as transpiration.

Guttation:

Guttation is once the excess water is rerelocated not from the stomata however the xylem at the edge of the leaves. Guttation happens as soon as a stomata is closed.

Storage of food:

In some plants, the leaves are modified to keep food, e.i. Onion. For this purpose, leaves are thick and fleshy.

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Exadjust of gases:

Gaseous exadjust such as oxygen and also carbon dioxide takes place with the stomata present on the leaves.


Key Points: Parts of a leaf, kinds & functions

Leaves are found at the nodes of the stem and also are responsible for preparing food for the plant via photosynthesis.Leaves contain the photosynthetic pigment dubbed chlorophyll.Tbelow are three primary parts of a leaf – Leaf base, leaf lamina, and also petiole.Tright here are two fundamental types of leaves – straightforward leaves and compound leaves.The various other types of leaves include direct, ovate, oblong, acicular, reniform, lanceolate, orbicular, rhomboid, elliptical, oblique, centric cordate, etc.Simple leaves: no incisions or cuts in the laminaCompound leaves: lamina is separated right into many kind of leafletsCompound leaves are additionally classified into two types: Palmately compound leaf and Pinnately compound leafPalmately compound: Leafallows are existing on a common axis, referred to as rachisPinnately compound leaf: Leaflets are attached at a common allude, at the pointer of the petiole.The plan of veins in a leaf is dubbed the vecountry. Mainly there are two forms of venation: parallel venation and also reticulate venation.Key functions of leaves: photosynthesis, transpiration, guttation, storage of food, exchange of gases