Which of the following categories of animals have a streamlined body shape ?

1. Birds and Reptiles
2. Fish and Amphibians
3. Fish and Birds
4. Birds and Mammals

Gill cover is technically termed as :

1. Exoskeleton
2. Operculum
3. Flippers
4. None of these

Fill in the blanks with a suitable word :

1. In birds, …………… are modified into wings.
2. The mountain goat has strong …………… for running up on rocky slopes of the mountains.
3. The hump of a camel is full of …………… which serves as the reserved food.
4. Whales are …………… mammals.
5. The kind of flowers in which pollination occurs with the help of water is termed as …………… flower.

Write true or false against the following statements. Rewrite and correct the false statements :

1. Dorsal and ventral fins of a fish are paired fins.
2. Fishes breathe by means of nostrils.
3. A camel urinates very less and its urine is comparatively thicker.
4. The leaves of water lily are reduced in the form of spines to reduce transpiration.
5. The claws of a bird help in steering (changing direction).