Question

Give adaptations in aves for flying.​

Answer 1

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i) Forelimbs modified into wings for flying.

ii) Hindlimbs used for walking, holding on to tree branches, running, aquatic blids have webbed toes.

iii) Streamlined body to reduce resistance during flight.

iv) Exoskeleton made up of feathers.

v) Hellow, pneumatic bones filled with air cavity to reduce body weight.

vi) Jaws without teeth and modified into beak.

vii) Respiration takes place by lungs, having air sacs to increase buoyancy.

Answer 2

Answer:

Birds have evolved not only wings, but many other adaptations that make it possible to fly. First of all, feathers. Feathers provide insulation, waterproofing, and a means to fly — and they're extraordinarily lightweight. Other features also help minimize the pull of gravity, mostly by reducing body weight.