Modifications of Leaf
Plants have changed themselves to adapt to the environment they grow. One of them is the modification of leaves. Leaves of several plants get modified into different form based on the purpose and environment
i. Spines: Leaves are reduced to spines, and the stem is modified into green succulent part to perform photosynthesis. Eg : Opuntia.
ii. Tendrils: In climbers, the leaf of plant would be modified into elongated structure to help the plants climb efficiently.
* Gloriosasuperba – Leaf tips are modified into tendrils
* Pisumsativum (pea) –Terminal leaflets are modified into tendrils.
iii. Phyllode: In Acacia auriculiformis, petioles expand to form leaf like structure. They carry out the function of leaf (Photosynthesis)
iv. Traps: Plants that grow in nitrogen deficient places adapt themselves well to get it. In Nepenthes, the leaves are modified into a flask like structure, which is used to attract insects and other tiny animals. The inner wall of the leaf secretes digestive enzymes that help to digest the insects and extract the nitrogen needed for the plant. Eg: Nepenthes.