Solution of Chapter 15. Life on the Earth (NCERT - Fundamental of Physical Geography Book)

Multiple choice question.

Which one of the following is included in biosphere?

Multiple choice question.

Tropical grasslands are also known as:

Multiple choice question.

Oxygen combines with iron found in the rocks to form:

Multiple choice question.

During photosynthesis, carbon dioxide combines with water in the presence of sunlight to form:

Answer the following questions in about 30 words.

(i) What do you understand by the term ‘ecology’?

(ii) What is an ecological system? Identify the major types of ecosystems in the world.

(iii) What is a food-chain? Give one example of a grazing food-chain identifying the various levels.

(iv) What do you understand by the term ‘food web’? Give examples.

(v) What is a biome?

Answer the following questions in about 150 words.

(i) What are bio-geochemical cycles? Explain how nitrogen is fixed in the atmosphere.

(ii) What is an ecological balance? Discuss the important measures needed to prevent ecological imbalances.

Show the distribution of the different biomes on the outline map of the world with a note highlighting the important characteristics of each biome.

Make a note of trees, shrubs and perennial plants in your school campus and devote half a day to observe the types of birds which come to the garden. Can you describe the diversity of birds?