Question

Some animals living in water have streamlined body shapes. This helps to
(a) Store food and fats
(b) Reduce resistance in the water
(c) Reduce the loss of water
(d) Keep the body warm

Answer 1

Hint: Streamlined body provides a smooth surface to the animals living in the water. It helps them by making their movement easy.

Complete answer: A streamlined body provides a smooth surface to the aquatic animal’s body which reduces resistance in the water by reducing friction and makes movement easy. Minimum resistance in water increases the speed of the movement, organisms move at a faster speed. Having a streamlined body is an adaptation or to be more specific an evolution to help the organism survive in a better way into their habitat. It is not associated with storing food, fats, keeping the body warm, or reducing the loss of water.

It reduces the pressure of water against the body of the organism. A body is said to be streamlined if it tapers at both ends. For example, fishes have streamlined bodies to help them while swimming in the water, birds have a streamlined body to help them while flying in the air, snakes also have a streamlined body which helps them in their faster movement.

Notes:
1. The bodies of airplanes and boats are also designed in a streamlined shape inspired by birds and most aquatic organisms.
2. In organisms, a streamlined body saves energy. So the organism uses less energy for the same task.
3.Tuna can swim at speeds of up to 70 kph (43 mph) as it has a streamlined body.