Exercises on Lesson 1

The starred agama keeps cool during a hot sunny day in desert by

• eating green vegetables.

• drinking more water.

• finding a shaded area.

• drinking less water.

Adaptation helps the living organism in all the following characters, except.

• surviving.

• reproduction.

• hiding.

• death.

Penguins live in a polar climate which

• is one of the hottest places on Earth.

• is one of the coldest places on Earth.

• looks like the rainy climate.

• looks like the forest climate.

Which of the following ways help penguins to adapt to live in polar climate ?

• Their bodies are covered with skin.

• Their bodies are covered with dense feathers only.

• Their bodies are covered with a thick layer of fat only.

• Their bodies are covered with dense feathers and a thick layer of fat.

In penguin's feet.............

• warm blood vessels weave around cold blood vessels.

• warm blood vessels weave around its toes.

• cold blood vessels weave around its toes.

• cold blood vessels weave around dense feathers.

Penguin's feet have blood vessels that bring................ from its feet towards its body.

• cold water

• warm water

• cold blood

• warm blood

The presence of a thick white fur is an adaptation in

• starred agama lizard.

• polar bear.

• fennec fox.

• forest bear.

Bears that live in forests have fur

• whiter than that of polar bears.

• darker than that of polar bears.

• similar to that of polar bears.

Fennec fox and caracal have.............. that help them blend in with desert landscapes.

• colorful scales

• tan-colored fur

• sandy-colored feathers

• dark fur

Camouflage means that the animal............

• can be seen easily among its surrounding environment.

• is hard to be seen among its surrounding environment.