Aestivation and Hibernation

Q. Draw a lake showing different zones. Why are they called so?

Q. From the following select the reason why polar bears have thick layer of fat just below their skin.

1. Prevent heat loss from the body
2. Make them strong
3. Provide stamina to swim
4. Make the body water-proof

Q. During winter, frogs enter into a state of unconsciousness where their metabolic activites slow down. This state is called .

Q. Which of the following characteristics are observed in the animal given in the image?

1. It has spindle shaped body.
2. It has fur on its skin.
3. Its body is white in colour.
4. Its body is light in weight.

Q. Choose the correct statements regarding hibernation.

1. Hibernation takes place during extreme heat.
2. Body temperature and breathing rate of animals decrease.
3. Animals go into a state of unconsciousness.
4. Hibernation takes place during winter.

Q. Thick and long hair on the body is an adaptation of animals found in ________.

1. lakes
2. deserts
3. snowy regions
4. sea

Q. Which of the following statement(s) is/are correct?

1. Aestivation is summer sleep
2. Aestivation is winter sleep
3. Hibernation is winter sleep
4. Hibernation is summer sleep

Q. Polar bears have a thick layer of fat below their skin to:

1. minimize heat loss from the body
2. make their body waterproof
3. ensure more fur formation
4. make their fur white

Q. In polar bears, a layer of fat is present below the ____.

1. skin
2. liver
3. stomach
4. lungs

Q. Animals aestivate during _________ season.

1. winter
2. summer
3. rainy
4. spring