Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities?

#Question id: 11057

#Section 1: Ecology

Bombardier beetles release an explosive mixture of quinones and hydrogen peroxide from glands at the end of their abdomen when disturbed by grasshopper mice and other predators. This is an example of what kind of defense against predation?

#Question id: 11058

#Section 1: Ecology

The pufferfish, a common marine fish, has extensive spines that extend outward when it swallows water, becoming several times its normal size. This is an example of what kind of defense against predation?

#Question id: 11169

#Section 1: Ecology

The viceroy butterfly (limenitis archippus) resembles the queen butterfly (danaus gilippus), a species toxic to birds because of alkaloids it stores during larval development from the milkweeds it feeds upon. The viceroy butterfly is an example of what kind of defense against predation?

#Question id: 11170

#Section 1: Ecology

Which of the following examples is not a behavioural defense against predators?

#Question id: 11171

#Section 1: Ecology

Starlings often decorate their nests with sprigs of carrot leaves because

#Question id: 11172

#Section 1: Ecology

Consider the consequences of a harmless prey that evolves toward mimicry of a model that has an antipredator defense (Batesian mimicry). What happens to the effectiveness of this defense as more and more prey in the population are harmless mimics