ECOSYSTEM (Part-II)

Total Questions: 40

1. When the air gets contaminated by such unwanted substances, which are harmful to both living and non-living. It is called [S.S.C. Online MTS (T-I) 17.09.2017 (Shift-I)]

Correct Answer: (b) air pollution
Note:

The cause of air pollution is the mixing of harmful particles, smoke, and toxic gases in the air for various types of health. These unwanted substances create air pollution due to modern industrialisation, gases generated from the fuel of factories and vehicles, etc.

2. Sulphur Dioxide pollution is indicated by an excessive growth of which of the following? [S.S.C. Online CHSL (T-I) 7.01.2017 (Shift-III)]

Correct Answer: (b) Lichens
Note:

Lichens start dying when the amount of sulphur dioxide in the atmosphere is high. Thus, it indicates an excess amount of sulphur dioxide in the air.

3. Which industry mainly produces bio-pollutant cellulose fibers? [S.S.C. Online C.P.O.S.I. (T-I) 7.07.2017 (Shift-I)]

I. Mining Industry
II. Soap and detergent industry
III. paper and pulp industry

Correct Answer: (c) III only
Note:

The paper and pulp industry mainly produces the organic pollutant cellulose.

4. The systematic name of which compound is nitrogen trihydride that is widely used in many industrial processes, and as a fertiliser and refrigerant? [S.S.C. Online CHSL (T-I) 03.06.2022 (Shift-II)]

Correct Answer: (a) Ammonia
Note:

The systematic name of Ammonia is nitrogen trihydride which is widely used in many industrial processes and as a fertilizer and refrigerant. Ammonia is a colourless, pungent, suffocating, highly water-soluble, gaseous compound, usually produced by the direct combination of nitrogen and hydrogen.

5. Which of the following is/are correct? [S.S.C. Online C.P.O.S.I. (T-I) 3.07.2017 (Shift-II)]

Correct Answer: (c) SPM - Suspended particulate matter and COD, both chemical oxygen demand
Note:

The full form of COD is Chemical Oxygen Demand, and the full form of SPM is Suspended Particulate Matter.

6. The narrow area of contact between land, air, and water is called— [S.S.C. Online MTS (T-I) 21.08.2019 (Shift-II)]

Correct Answer: (b) biosphere
Note:

The narrow area of contact between land, air, and water is called the biosphere. The biosphere is the area of living beings. The Earth’s lithosphere, hydrosphere, atmosphere, and the plants and animals living in it are collectively called ‘Biosphere’.

7. There is a limited area, where land, water, and air meet together, in which all kinds of organisms are found is called— [S.S.C. Online MTS (T-I) 11.10.2017 (Shift-I)]

Correct Answer: (c) Biosphere
Note:

The narrow area of contact between land, air, and water is called the biosphere. The biosphere is the area of living beings. The Earth’s lithosphere, hydrosphere, atmosphere, and the plants and animals living in it are collectively called ‘Biosphere’.

8. Heat is which component of habitat? [S.S.C. Online MTS (T-I) 9.10.2017 (Shift-I)]

Correct Answer: (b) Abiotic component
Note:

There are mainly two components in an environment. There are biotic components and abiotic components. Abiotic components include water, land, air, energy or heat, etc. Therefore, Heat 1 is called the abiotic component of an environment.

9. Which is/are biotic components? [S.S.C. Online MTS (T-I) 6.10.2017 (Shift-I)]

I. Plants
II. Animals
III. Soil

Correct Answer: (c) Both I and II
Note:

The ecosystem is a composition made up of biotic and abiotic components. For example, plants and animals are biotic or abiotic components, whereas soil, air, sunlight, water, heat, organic and inorganic substances, etc., are biotic or abiotic components.

10. Which of the following is not considered a part of the Abiotic Environment? [S.S.C. Online CHSL (T-I) 7.02.2017 (Shift-III)]

Correct Answer: (a) Plants
Note:

The ecosystem is a composition made up of biotic and abiotic components. For example, plants and animals are biotic or abiotic components, whereas soil, air, sunlight, water, heat, organic and inorganic substances, etc., are biotic or abiotic components.