Adaptive Modifications in Plants · NCERT Biology

Which adaptive modification enables plants like Opuntia to survive in deserts?

  1. Broad photosynthetic leaf blade
  2. Flattened green phylloclade stem
  3. Dense fibrous root mat underground
  4. Cluster of aerial support roots
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Correct answer: Flattened green phylloclade stem

In Opuntia, the stem is modified into a phylloclade for photosynthesis. Leaves are reduced to spines to minimize water loss.

Difficulty: Medium Question 12 of 20

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