A) Opuntia
B) Casuarina
C) Hydrilla
D) Acacia
Correct Answer: A
Solution :
[a] Opuntia is a plant growing in dry and xeric habitats. In this, the stem having several nodes and internodes is modified into flat, fleshy, thick, green leaf-like structure called phylloclade. Phylloclade performs the function of photosynthesis like a leaf and also stores food. The leaves get modified into spines which helps to reduce transpiration.
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