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Biology · PYQ NEET UG 2020

हिन्दी

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:

  1. Growth response
  2. Defence action
  3. Effect on reproduction
  4. Nutritive value

Correct answer · Option 2

Defence action

Explanation

Plants produce secondary metabolites like nicotine, caffeine, and strychnine primarily as defensive mechanisms against grazers, herbivores, and pathogens.
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