In Opuntia, the stem is modified into a flattened

Question:

In Opuntia, the stem is modified into a flattened green structure to perform the function of leaves (i.e., photosynthesis). Cite two other examples of modifications of plant parts for photosynthesis.

Solution:

In Australian Acasia the petiole takes the shape of the leaf and turns green to perform the function of photosynthesis.

The stem, i.e., about one internode long modifies into a leaf-like structure to carry out photosynthesis, as in Asparagus.

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