Explain various modifications of Petiole with help of well labelled diagram?
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Leaves have two main parts: The leaf blade and the Stalk or the petiole.
The leaf blade: It is also called the lamina. It’s generally broad and flat. It is in this layer that photosynthesis occurs. It contains a prominent midrib at the center of the leaf blade which is the main vein. From this midrib arise branches called veins. They are of different types depending upon the type of edges, the pattern of the veins and the number of blades per leaf.
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