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 the purpose of photosynthesis.

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Solution

Root modification for photosynthesis:

Taeniophyllum, an epiphyte, lacks stems and leaves. The epiphytic roots are green and contain chloroplast for photosynthesis.

Petiole modification for photosynthesis:

In some plants like Australian acacia, the petioles become green and expand to get modified to perform photosynthesis. Leaves in these plants are short-lived.

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Evergreen Plants

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