H. Answer the following in detail.
1. What are the main parts of a leaf?
2. What is venation? Describe various types of leaf venation.
3. State various functions of a leaf.
4. What is a leaf tendril? How does it help the plant?
5. State the function of the leaf spines in Opuntia.
6. Describe vegetative propagation in Bryophyllum.
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Answer:
most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. The leaves of some kinds of plants also have a third part, called the stipules.
Explanation:
Each leaf typically has a leaf blade ( lamina ), stipules, a midrib, and a margin. Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves.
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