5th std EVS 2 Chapter 4 Evolution l Question and Answer l Explanation in Marathi

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Environmental Studies-2 -  5th Standard

4. Evolution

Question And Answer

1. Fill in the blanks.

(a) The first systematic explanation of the concept of evolution was given by Charles Darwin.

(Charles Darwin, Willard Libby, Louis Leakey) 

(b) Mammals are the most evolved animals among vertebrates.

(Aquatic animals, Amphibians, Mammals)

2. Answer each question in one sentence.

(a) What do we call animals which live in water and also on land?

Ans: The animals which live in water and also on the land are called amphibians.

(b) Where did the first humans appear?

Ans: The first humans appeared on the African continent.

3. Give reasons for the following :

(a) The species of dinosaurs, which were enormous in size, suddenly became extinct.

Ans: Species which are capable of adapting to environmental changes are able to survive. Some natural calamities or environmental changes led to extinction of enormous dinosaurs. 

(b) In the course of time, a new species with characteristics different from the original species is created

Ans: Characteristics of species change according to theory of evolution. Some of the characteristics of the species change

while adjusting the surrounding which is called adaption. These characteristics are then transferred to the next generation. 

4. Fill in the blanks in the concept chart given below.

Thank You..

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