Which of the following is an example of a defence used by plants against herbivorous?
I. Production of caffeine, tannin, quinine.
II. More production of non-woody tissues.
III. Production of hairs, thorns, spines.
IV. Production of hormones like chemicals that interfere with insect metamorphosis.
Select the correct codes

I and II

II, III and IV

I, II and III

I, III and IV

Answer

I, III and IV

Production of caffeine, tannin, quinine are the examples of secondary metabolites, which are secreted by plant against herbivores.

Production of hormone like chemicals thorns, spines are also the strategy of plant to avoid grazing by herbivores.

Production of non-woody is not the adaptation for plant from predation.

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