What makes the Monarch butterfly distasteful to its predator (bird)?

What makes the Monarch butterfly distasteful to its predator (bird)?
  1. By being cryptically:coloured (camouflaged)
  2. By having a special chemical present in its body
  3. By producing and storing poisonous chemicals
  4. By using thorns as a means of defence

Solution

The Monarch butterfly is highly distasteful to its predator (bird) because of a special chemical present in its body, which it acquires during its caterpillar stage by feeding on a poisonous weed.

Asked in: NCERT

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