Spines present on the areoles of Opuntia represent
A
stem
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B
leaves
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C
buds
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D
phyllodes
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Solution
The correct option is B leaves Areoles are the evolutionary modification in the cacti. These modifications give rise to spines and glochids which are the means of self-defense. These spines effectively cover the cacti. These evolved as abortive branch buds while their spines evolved as vestigial leaves.