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Question : Name important defence mechanisms in plants against herbivory.

Answer»

Solution :•Modification of leaves into thorns and development of spiny MARGINS on leaves.
• Many PLANTS PRODUCE and store chemicals which MAKE herbivores sick. Example : Calotropis PRODUCES highly poisonous cardiac glycosides.
• Some other chemical substances such as nicotine, quinine, opium etc. are produced by plants and provide defence against grazing animals.


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