[Campbell Biology P.918] In community-level plant defenses, some plants 'recruit' predatory ... | Practice Question

In community-level plant defenses, some plants 'recruit' predatory animals to help defend against herbivores. When a plant leaf is damaged by a munching caterpillar, it releases compounds that attract parasitoid wasps. What specific combination of factors triggers the plant's release of these attraction compounds?

  • A: The plant detects the presence of parasitoid wasp eggs on the caterpillar.
  • B: Only the physical damage caused by the caterpillar's munching.
  • C: A specific compound found in the caterpillar's feces.
  • D: A combination of physical damage to the leaf caused by munching and a specific compound in the caterpillar's saliva.

Explanation

The text clearly states: 'The stimulus for this response is a combination of physical damage to the leaf caused by the munching caterpillar and a specific compound in the caterpillar's saliva.'