Megaphylls are large, complex leaves that typically have a highly branched vascular system, distinguishing them from microphylls, which are smaller leaves with a simpler structure. These types of leaves are primarily found in seedless vascular plants and play a crucial role in photosynthesis and gas exchange, allowing these plants to thrive in various environments. The presence of megaphylls is one of the key adaptations that has contributed to the evolutionary success of certain plant groups, particularly ferns and their relatives.
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