NEET BIOLOGY

Detailed explanation-1: -Birds are warm-blooded animals. Their forelimbs are modified into wings. They have well-developed flight muscles that help during the flight.

Detailed explanation-2: -Like mammals, birds are warm-blooded, meaning that their body temperature stays the same no matter how hot or cold it is outside. This characteristic allows birds to maintain the high levels of energy needed for flying.

Detailed explanation-3: -All birds have feathers. They are vertebrates. They have hollow bones which them to fly by the use of wings, but some birds are flightless. All birds are warm-blooded and oviparous.

Detailed explanation-4: -The typical feather consists of a central shaft (rachis), with serial paired branches (barbs) forming a flattened, usually curved surface-the vane. The barbs possess further branches-the barbules-and the barbules of adjacent barbs are attached to one another by hooks, stiffening the vane.

Detailed explanation-5: -Mammals and birds are warm blooded animals. Complete answer: Homoeothermic animals are those animals which have the ability to maintain a relatively constant body temperature. They are also known as warm blooded animals.