Thorns, spines and prickles are

Organs of defence

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Organse of offence

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Organs of clinging

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Specialised for gaseous exchange

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Solution

The correct option is B Organs of defence
A. Organs of defence
Reason: Thorns are derived from shoots, spines are derived from leaves and prickles are derived from the epidermis. In plant morphology, these are all hard structures with sharp, stiff ends, with the same function of protecting plant from herbivorous animals. Thus, thorns, spines and prickles are defensive organs of plant.

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