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Organisms and Populations question

2020 · Q68
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Organisms and Populations question

2020 · Q68

NEETBiologyOrganisms and PopulationsMCQ+4 / −1
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their
  1. A
    Nutritive value
  2. B
    Growth response
  3. C
    Effect on reproduction
  4. D
    Defence action
View written solutionFree

Correct answer: D

A wide variety of chemical substances that we extract from plants on a commercial scale (nicotine, caffeine, quinine, strychnine, opium, etc) are produced by them (plants) as defences against grazers and browsers.

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