Which example of an evolutionary adaptation decreases herbivory?
◦ Plants of the milkweed family produce a toxin that Monarch butterflies can store in their bodies.
◦ Corn plants attacked by herbivores release an airborne chemical that turns on defensive genes in nearby corn plants.
◦ Damaged, partially eaten leaves can seal off the damaged area by hardening cell walls.
◦ Caterpillars that feed on plants tend to be green.