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2017 Morphology of Flowering Plants Stem modifications – thorns Easy Question 49 of 133 in Morphology of Flowering Plants

In $Bougainvillea$ thorns are the modifications of

A Stipules

B Adventitious root

C Stem

D Leaf

The answer is C.

Solution

Thorns arise from axillary buds, so they are stem modifications.

Thorns are hard, pointed, straight structures for protection. They are modified stems (axillary buds).

Concept bougainvillea-thorn-stem

Morphology of Flowering Plants in past papers

133 questions from this chapter have appeared across 26 exam years.