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

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Some examples include:

  1. Euphorbia- it is a large genus of flowering plants, also known as spurge. The stem of Euphorbia is fleshy and cylindrical in structure. The stem in this plant helps to carry out photosynthesis because of the presence of chlorophyll in the stem.
  2. Acacia- in this, the petiole is responsible for joining the stem to the leaves and takes up the function of a leaf. It is modified into a lamina structure and leaves are highly reduced.
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