Question

Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that

Options

• reptiles have evolved from birds

• there is no evolutionary connection between reptiles and birds

• feathers are homologous structures in both the organisms

• birds have evolved from reptiles

Answer 1

birds have evolved from reptiles

Explanation - 

Dinosaurs were reptiles. The possible explanation for the given information that some dinosaurs had feathers but they could not fly and birds have feathers that help them fly, is that feathers in dinosaurs start as providing insulation in cold weather and later they become useful for flight in birds. So, in the context of evolution, this means that birds have evolved from reptiles.