1. Some dinosaurs had feathers, although they could not fly; birds have feathers that help them to fly. In the context of evolution, this means that (a) reptiles have evolved from birds (b) there is no evolutionary connection between reptiles and birds (c) feathers are homologous structures in both organisms birds have evolved from reptiles

• Soln:

The answer is (d) birds have evolved from reptiles

Explanation:

Dinosaurs were reptiles. Some dinosaurs had feathers, but they could not use them to fly. Feathers in dinosaurs started as providing insulation in cold weather, and later, birds adapted them to flight. So, in the context of evolution, this means that birds have evolved from reptiles.