Which of the following adaptations to life on land is found in both insects and modern reptiles?
a. ability to fly
b. tracheae to distribute oxygen
c. two pairs of walking legs
d. metamorphosis from a larval form
e. body surfaces that resist evaporation
E; An important adaptation to life on land is some kind of surface coating to resist water loss, an adaptation found in insects, reptiles, birds, mammals, and plants. The ability to fly and tracheae are found in insects, not reptiles (choices a and b). The groups have different numbers of walking legs (six versus four, choice c). Reptiles do not undergo metamorphosis, but rather develop directly in the egg (choice d).
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