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Question
Citrus thorn is actually a modification of
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Solution
The correct option is B Stem
The thorn is a hard, straight and pointed structure. In Bougainvillea and Duranta, the axillary bud is modified into a thorn. In Carissa, the terminal bud is modified into a pair of thorns. The thorn sometimes bears leaves, flowers and fruits as seen in Duranta and Pomegranate. The thorns not only check the rate of transpiration but also protect the plants from herbivore animals. For example- Carissa, Duranta, Citrus.Thus, the correct option is D.
The thorn is a hard, straight and pointed structure. In Bougainvillea and Duranta, the axillary bud is modified into a thorn. In Carissa, the terminal bud is modified into a pair of thorns. The thorn sometimes bears leaves, flowers and fruits as seen in Duranta and Pomegranate. The thorns not only check the rate of transpiration but also protect the plants from herbivore animals. For example- Carissa, Duranta, Citrus.
Thus, the correct option is D.
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