In a group of insects descended from a common ancestor, some species evolved long siphoning mouthparts for nectar feeding, while others developed strong chewing structures for leaves. Which evolutionary principle most directly explains this diversification?

Which sequence best describes the normal order of events in animal nutrition?

Which statement best describes extracellular digestion?

Which digestive organ is primarily responsible for absorbing most nutrients from digested food into the bloodstream?

The long, curved canine teeth of extinct saber-toothed predators were most likely adapted for which feeding behavior?