Class 12 Anthropology Important Chapter 7 Ecology

Class 12 Anthropology Important Chapter 7 Ecology Solutions English Medium As Per The New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 12 Anthropology Important Solutions in English and select need one. AHSEC Class 12 Anthropology Additional Notes Download PDF. HS 2nd Year Anthropology Additional Solutions.

Class 12 Anthropology Important Chapter 7 Ecology

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. ASSEB Class 12 Anthropology Additional Question Answer are part of All Subject Solutions. Here we have given HS 2nd Year Anthropology Important Solutions English Medium for All Chapters, You can practice these here.

Ecology

Chapter: 7

IMPORTANT QUESTION AND ANSWER

Answer the Following Questions:

1. Who coined the term ‘Ecology’?

Ans: Ernst Haeckel.

2. What does the word ‘Oikos’ mean?

Ans: Home or household.

3. Name the two main components of the environment.

Ans: Biotic and abiotic components.

4. What is a food web?

Ans: A network of interconnected food chains.

5. What is trophic level?

Ans: The position an organism occupies in a food chain.

6. What is the main component of the atmosphere?

Ans: Nitrogen (78%).

7. What is the function of the ozone layer?

Ans: It protects us from harmful UV radiation.

8. What is environment? State its two major components.

Ans: Environment refers to everything surrounding an organism that affects its growth and survival.

The two major components are:

(i) Biotic – living things like plants, animals, and microorganisms.

(ii) Abiotic – non-living things like air, water, soil, sunlight.

9. Write any four differences between biotic and abiotic components.

Ans: 

Biotic	Abiotic
Living components like plants, animals, fungi, bacteria.	Non-living components like temperature, soil, water, light.
It interact with each other for food and energy.	It controls physical conditions of the environment.

10. What is an ecosystem? Give two examples.

Ans: An ecosystem is a self-sustained unit where living organisms interact with each other and with their non-living environment.

Examples:

(i) Pond ecosystem.

(ii) Forest ecosystem.

11. Mention any four importance of water in the environment.

Ans: (i) Essential for drinking and agriculture.

(ii) Habitat for aquatic organisms.

(iii) Main component of living cells.

(iv) Helps in photosynthesis and nutrient transportation.

12. What is a food web?

Ans: A food web is a network of interconnected food chains in an ecosystem. It shows multiple feeding relationships and maintains ecological balance.

13. Name and describe the main layers of the atmosphere.

Ans: (i) Troposphere – Layer where weather changes occur.

(ii) Stratosphere – Contains ozone layer.

(iii) Mesosphere – Coldest layer.

(iv) Thermosphere – Ionosphere, helps in radio transmission.

14. What is acid rain? Mention its effects.

Ans: Acid rain is formed when SO₂ and NO₂ mix with water vapour to form sulphuric and nitric acids.

Effects

(i) Damages crops and forests.

(ii) Corrodes buildings.

(iii) Makes water bodies acidic.

15. What is meant by ecological balance?

Ans: Ecological balance refers to the natural balance between living organisms and their environment, where each species and element supports the other in sustaining the ecosystem.