Question

IV. Assertion and reasoning:
DIRECTIONS: Mark the option which is more suitable:
a) If both assertion and reason are true and reason is correct explanation of assertion.
b) If both assertion and reason are true, but reason is not correct explanation of assertion.
c) If assertion is true but reason is false.
d) If both assertion and reason are false.
1. Assertion: Lithosphere is the domain that provides us forests, grasslands for grazing etc.
Reason: It is made up of rocks and minerals and covered by a thin layer of soil.
2. Assertion: The domain of water is referred to as hydrosphere.
Reason: The atmosphere is the thin layer of air that surrounds the earth.
3. Assertion: Biotic is the world of non-living elements.
Reason: Abiotic is the world of living organisms.
4Assertion: Early humans adapted themselves to the natural surroundings.
Reason: They learned to grow crops, domesticate animals and lead a settled life.

Answer 1

Answer:

If both assertion and reason are true and reason is correct explanation of assertion. The Answer is (A)

Explanation:

Plants, animals, and microbes are interdependent. This makes the ecosystem self-regulating and self-sustaining with all the components of the ecosystem.