5th Std EVS 2 Chapter 3 Life on Earth l Question and Answer l Explanation in Marathi

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Environmental Studies-2 -  5th Standard

3. Life on Earth

Question And Answer

Q1. Answer each question in one sentence.

(a) What instrument do we need to see a unicellular organism?

Ans: We need microscope to see a unicellular organism.

(b) Where did the protozoa appear first?

Ans: The protozoa had appeared first in water.

Q2. Answer the following in brief.

(a) How were the sun and the planets in our solar system created?

Ans: 1) On the basis of scientific research it is believed that around 4.5 billion year ago an enormous cloud of very hot gases and dust spinning at the great speed was formed in space.

2) Its circular motion and great speed caused it to divide into several portions thus creating the sun and the planets which

revolve around the sun.

(b) Write any two characteristics of animals.

Ans: Characteristics of animals are as follows:

1) Animals breathe

2) Animals move in order to get food or for other purposes.

Q3. Find the names of the planets in the box below.

Ans:

Q4. Arrange the events given below in chronological order.

(a) Water bodies appeared on the earth’s surface.

(b) The sun and the planets revolving around it were created.

(c) Protozoa appeared in water.

(d) An enormous cloud of hot gases and dust was formed in space.

Ans:

a) An enormous cloud of hot gases and dust was formed in space.

b) The sun and the planets revolving around it were created.

c) Water bodies appeared on the earth’s surface.

d) Protozoa appeared in water.

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