Question

Write 2 features of birds that help them to fly

Answer 1

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Lightweight, smooth feathers – this reduces the forces of weight and drag.

A beak, instead of heavy, bony jaws and teeth – this reduces the force of weight.

An enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust.

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Answer 2

Answer:

Birds have the following features that help them to fly.

i) Birds have streamlined bodies, which minimises air resistance. They are light in weight but have a strong skeleton.

ii) The bones of the birds are hollow and filled with air. This makes their bodies lighter and also supplies oxygen which is needed to lift their bodies for flight.

iii) Their forelimbs are modified into wings.

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