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Spines in cactus are due to _______

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in Biology – Class 11 by (272k points)
Spines in cactus are due to _______

(a) modifications of leaves

(b) modifications of stem

(c) modifications of flower

(d) modifications of bud

The question was posed to me by my school principal while I was bunking the class.

My question is from Flowering Plants Morphology in chapter Morphology of Flowering Plants of Biology – Class 11

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The correct answer is (a) modifications of leaves

The best I can explain: Spines in cactus are due to modifications of leaves. Cactuses are mainly found in arid regions. So, in order to reduce transpiration of water leaves modify themselves into spines.

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