Adaptation

Q. The specific features which enable a plant or an animal to live in a particular habitat is called _____________.

1. adaptation
2. resistance
3. stability
4. ecosystem

Q.

The skin of the camel is thick and contains water-storing osmotic cells to conserve water, as they live in deserts.

1. True

2. False

Q. Our body stops performing life processes when we fall asleep.

1. True
2. False

Q. Change in a living thing that makes it better suited to its environment is called an

1. adaptation
2. absorption
3. assimilation

Q. Match the external features of animals to their respective habitats.

Q. A group of red beetles lives on green leaves of a tree. Beetles multiply through sexual reproduction. One day, some green beetles are seen among the red beetles. Green beetles breed to produce green progeny. Crows on the tree eat beetles. Some green beetles appear among the red beetle because

1. Beetles become green by accumulating chlorophyll from the green leaves that they eat
2. Natural variations occur during sexual reproduction
3. Red beetles mimic green colour of leaves whenever they see crows
4. Beetle change colour from red to green with change of season

Q. Mammal which never drinks water is

1. Kangaroo
2. Hedgehog
3. Kangaroo/Desert Rat
4. Shrew

Q. Which of the following is not found in polluted water?

1. Blue green algae
2. Larvae of stone fly
3. Water hyacinth
4. Sewage fungi

Q. determine how an organism must look like.

1. Father
2. Mother
3. Genes
4. Family

Q. Fill in the blanks:

_________ of a camel protect it's eyes from sand.

[1 mark]

Q. Why do some plants (e.g. Coleus , croton , etc.) have leaves with non-green portion?

Q. Woody plants carry out gas exchange through:​

1. Meristematic tissues
2. Stem hair
3. Stomata
4. Lenticels

Q. Identify to which category the plant belongs to.

1. Photosynthesis is carried out by stem.
2. Stem is covered by a waxy layer.
3. Leaves are in the form of spines.

1. Plants in mountain regions
2. Terrestrial plants
3. Aquatic plants
4. Desert plants

Q.

Most of the organisms can usually survive between ________ °C and ________ °C.