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46. 46. &©, ool cal, , we, w@, So, , 6:24 Or F, , < Ll ©, , Oo, ), a, , E, , Class- 3 Chapter-14, , E. Answer the following questions:, Q. 1. Name two birds that live in water., , Ans. Cranes and ducks., , Q.2. What are down feathers?, , Ans. Small feathers that cover the bodies of, a bird are called the down feathers ., , Q.3. What are the special features of Aquatic, Birds?, , Ans. Aquatic birds have special oil glands so, their feathers do not get wet ., , Q.4. Why are the bones of flying birds hollow, from inside?, , Ans. The hollow bones of the birds make, their bodies light which helps them to fly., Q.5. Why can an ostrich not fly?, , Ans. An ostrich cannot play because it has, heavy and solid bones., , E. Think and answer:, , Q. Aeroplanes are given a streamlined, shape .Why?, , Ans. The streamlined shape of the aeroplane, help them to cut through the air while flying., BTL questions:, , Q. What is the shape of birds a body?, , Ans. The shape of the bird's body is, , streamlined.