Chapter 4 Evolution Solutions

Maharashtra State Board Class 5 EVS Solutions Part 2 Chapter 4 Evolution

5th Std EVS 2 Digest Chapter 4 Evolution Textbook Questions and Answers

1. Fill in the blank.

Question a.
The first systematic explanation of the concept of evolution was given by ………………….
Charles Darwin
Willard Libby
Louis Leakey
Answer:
The first systematic explanation of the concept of evolution was given by Charles Darwin.

Question b.
……………… are the most evolved animals among vertebrates
Aquatic animals
Amphibians
Mammals
Answer:
Mammals are the most evolved animals among vertebrates

2. Answer the question in one sentence.

What do we call animals which live in water and also on land?
Answer:
Amphibians live in water and also on land.

Where did the first humans appear?
Answer:
The first human appeared on the African continent.

3. Give reasons for the following:

Question a.
The species of dinosaurs, which were enormous in size, suddenly became extinct.
Answer:
The species of dinosaurs, which were enormous in size, suddenly became extinct, because –

1. According to Darwin, the species that cannot adapt to environmental changes become extinct in the process of evolution.
2. Some sudden natural disaster or environmental change is believed to be responsible for the extinction of enormous dinosaurs.

Question b.
In the course of time, a new species with characteristics different from the original species is created.
Answer:
In the process of survival by adapting to environmental changes, certain internal physical changes occur in some species of animals.
Over a period of time, these changes become inherited characteristics seen in all subsequent generations. Thus, in the course of time, a new species with characteristics different from the original species is created.

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

Activity :