Aphids are plant-eating insects. A particularly tasty plant might have hundreds of aphids crowded on it. Many of the aphids are wingless, and they stay on the same plant for most of their lives. But some of the aphids have wings, so they can fly elsewhere if they sense that there are too many of them to share one plant.

What do aphids and tree lizards have in common?

ANSWER Both species have two morphs that look different from each other. One tree lizard morph has an orange-blue dewlap, and the other has a solid orange dewlap. One aphid morph is wingless, and the other has wings..