Question

In each of the following questions, a statement of Assertion is given followed by a corresponding

statement of Reason just below it. Of the statements, mark the correct answer as:

A) If both assertion and reason are true and reason is the correct explanation of assertion.

B) If both assertion and reason are true but reason is not the correct explanation of assertion

C) If assertion is true but reason is false

D) If assertion is false but reason is true.

Q1. Assertion: Infectious agents belong to different categories of organisms and may be unicellular and

microscopic or multicellular.

Reason : Infectious agents are spread through air, water, physical contact or vectors

Q2. Assertion: The combustion of fossil fuels also increases the amount of suspended particles in air.

These suspended particles could be unburned carbon particles or substances called

hydrocarbons.

Reason: Presence of high levels of all these pollutants cause visibility to be lowered, especially in cold

weather when water also condenses out of air. This is known as smog and is a visible

indication of air pollution.

Answer 1

Answer:

Plants, animals, and microbes are interdependent. This makes the ecosystem self-regulating and self-sustaining with all the components of the ecosystem. So, the correct answer is option A. Both assertion and reason are true and reason is the correct explanation of assertion.

Answer 2

qno 1 : both a and r are true but r is not correct explanation of a

qno2:both a and r are true and r is correct explanation of a

Hope it helps uhhh