Io moths have bright yellow wings. On the hindwing, which is hidden when the mot

Question

Io moths have bright yellow wings. On the hindwing, which is hidden when the moth is resting on a tree, there is a large eyespot. You are conducting an experiment to determine whether the eyespot is a deterrent to avian predators. You capture a large number of moths, and divide them into five groups: unmanipulated, eyespot painted over with clear marker so that it is still visible, eyespot painted to be smaller, eyespotpainted to be larger, and eyespot painted over with yellow so that it is not visible. Which category is a control in this experiment?

moths with the eyespot painted over with clear marker

moths with the eyespot painted over with yellow marker

moths with the eyespot painted to be smaller

moths with the eyespot painted to be larger

none of the above

moths with the eyespot painted over with clear marker

moths with the eyespot painted over with yellow marker

moths with the eyespot painted to be smaller

moths with the eyespot painted to be larger

none of the above

Explanation / Answer

Moth eyespot painted with yellow marker makes it invisible since the wings of the moths too are yellow. This will make the moths invisible to the predators. These will therefore serve as control in the experiment.

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