Adaptation

Q.

The small changes that take place in the body of an organism over a short interval of time due to the change in the surroundings which enable the organism to live in its changed surroundings are known as __.

Q. Which of the following adaptive feature help polar bear to escape from its predators?

1. Thick fat layer
2. White fur on the body
3. Very small size
4. Coloured fur on the body

Q. Specific features which enable an organism to survive in a particular habitat, are called adaptations.

1. True
2. False

Q. Arrange the following steps in the correct order in which they appear in the process of adaptation.

A. You gradually feel better and decrease sweating.
B. Sudden increase in the temperature of the environment.
C. Eventually you stop sweating and then feel completely normal.
D. You feel very hot and start sweating.

1. B, D, C, A
2. B, C, D, A
3. B, D, A, C
4. A, B, C, D

Q.

Fishes have ___ shaped body that helps them to move inside water.

Q. Which adaptation helps the cactus plant to minimise loss of water?

1. Broad leaves
2. Fibrous roots
3. Needle like leaves
4. Branched stem

Q. Plants tend to lose a lot of water in hot weather. Which of the following helps plants to save water?

1. Shedding leaves
2. Having more leaves
3. Having broad leaves
4. Having thicker leaves

Q. Which of these plants is usually weak-stemmed with numerous air spaces and very thin long and waxy-coated leaves?

1. Bryophytes
2. Hydrophytes
3. Mesophytes
4. Xerophytes

Q. Tribes with very high melanin content are found in and around______.

1. Tropic of cancer

2. Tropic of capricorn

3. Equator

4. None of the above

Q. What does a camel stores in its hump?

1. Body Fat
2. Blood
3. Water
4. Food