NCERT Class 9 Social Science MCQ Chapter 11 Life on Earth

NCERT Class 9 Social Science MCQ Chapter 11 Life on Earth Solutions English Medium As Per New Syllabus. NCERT Class 9 Social Science MCQ Chapter 11 Life on Earth Notes to each chapter is provided in the list so that you can easily browse throughout different chapter NCERT Class 9 Social Science MCQ Question Answer Download PDF and select needs one. CBSE Class 9 Social Science Multiple Choice Solutions.

NCERT Class 9 Social Science MCQ Chapter 11 Life on Earth

Also, you can read the CBSE book online in these sections Solutions by Expert Teachers as per (CBSE) Book guidelines. NCERT Class 9 Social Science Objective Type Solutions. These solutions are part of NCERT All Subject Solutions. Here we have given NCERT Class 9 Social Science MCQs in English Medium Solutions for All Subject, You can practice these here.

Life on Earth

Chapter – 11

Part – II: Understanding Society India and Beyond

MCQ

1. The word ‘biome’ is derived from the Greek word bios, which means:

(i) Environment.

(ii) Life.

(iii) Nature.

(iv) Earth.

Ans: (ii) Life.

2. Which of the following best describes the relationship between a biome and an ecosystem?

(i) An ecosystem covers the entire planet, while a biome is a single forest.

(ii) A biome is a broad environmental region, while an ecosystem is like a neighborhood within it.

(iii) A biome consists only of non-living things, while an ecosystem contains living things.

(iv) An ecosystem and a biome are completely identical in size and function.

Ans: (ii) A biome is a broad environmental region, while an ecosystem is like a neighborhood within it.

3. Which key climatic factors primarily determine the types of plants and animals that survive in a biome?

(i) Temperature and precipitation patterns.

(ii) Soil depth and wind direction.

(iii) Longitude and time zone.

(iv) Population density and industrial activity.

Ans: (i) Temperature and precipitation patterns.

4. Which terrestrial biome is characterized by coniferous forests consisting mainly of pines, spruces, and larches?

(i) Tundra Biome.

(ii) Desert Biome.

(iii) Temperate Deciduous Biome.

(iv) Taiga Biome. 

Ans: (iv) Taiga Biome. 

5. Tropical rainforests are located primarily near the Equator between:

(i) 10° N and 10° S 

(ii) 23.5° N and 23.5° S 

(iii) 40° N and 60° N 

(iv) The Arctic and Antarctic Circles.

Ans: (ii) 23.5° N and 23.5° S.

6. Why are tropical rainforests often called a ‘gene bank’?

(i) They store digital biological databases.

(ii) They are artificial seed storage vaults built by governments.

(iii) They preserve rich, unique genetic material supporting conservation and scientific research.

(iv) They generate renewable hydroelectric power.

Ans: (iii) They preserve rich, unique genetic material supporting conservation and scientific research.

7. Tropical grasslands with scattered trees that support large grazing animals like lions, elephants, and giraffes are called:

(i) Prairies.

(ii) Steppes.

(iii) Savannas.

(iv) Tundras.

Ans: (iii) Savannas.

8. The Rann of Kutch in Gujarat is one of the world’s largest:

(i) Cold tundra biomes.

(ii) Salt deserts.

(iii) Tropical rainforests.

(iv) Coniferous pine forests.

Ans: (ii) Salt deserts.

9. What is the permanently frozen subsoil characteristic of the tundra biome called?

(i) Permafrost.

(ii) Humus.

(iii) Silt.

(iv) Regolith.

Ans: (i) Permafrost.

10. Aquatic biomes cover approximately how much of the Earth’s surface?

(i) One-fourth.

(ii) One-half.

(iii) Three-fourths.

(iv) Nine-tenths.

Ans: (iii) Three-fourths.

11. In a biome pyramid, what happens to the number of organisms, biomass, and available energy as you move up trophic levels?

(i) They increase rapidly.

(ii) They remain completely constant.

(iii) They decrease as energy is lost at each level as heat.

(iv) They double at each level.

Ans: (iii) They decrease as energy is lost at each level as heat.

12. The term ‘biodiversity’ refers to:

(i) Only the total count of wild animals in a national park.

(ii) The variety of life on Earth, including species, genetic differences, and habitats.

(iii) Agricultural crops grown on commercial farms.

(iv) Non-living environmental factors like rocks and minerals.

Ans: (ii) The variety of life on Earth, including species, genetic differences, and habitats.

13. Which of the following is NOT listed as one of India’s major biodiversity hotspots?

(i) The Himalaya.

(ii) The Western Ghats.

(iii) The Thar Desert Plains.

(iv) The Andaman & Nicobar Islands.

Ans: (iii) The Thar Desert Plains.

14. Small forest patches protected by local communities for religious and cultural purposes are known as:

(i) Biosphere reserves.

(ii) Sacred groves.

(iii) Commercial timber plantations.

(iv) Agricultural commons.

Ans: (ii) Sacred groves.

15. What name is used for sacred groves in the state of Meghalaya and eastern/central India?

(i) Devrai.

(ii) Devarakadu.

(iii) Sarna.

(iv) Kavu.

Ans: (iii) Sarna.