NCERT Solutions for Class 12 Biology Chapter 7 - Evolution

 

Let us start reading the preparation article Regarding CBSE 12 Class

NCERT Solutions for Class 12 Biology Chapter 7 – Evolution: What exactly is evolution? To understand the changes in flora and fauna that have occurred over millions of years on earth, we must have an understanding of the context of origin of life, i.e., evolution of earth, of stars and indeed of the universe itself. What follows is the longest of all the construed and conjectured stories. NCERT of Class 12 Biology Chapter 7 – Evolution is the story of origin of life and evolution of life forms or biodiversity on planet earth in the context of evolution of earth and against the background of the evolution of universe itself.

The origin of life on earth can be understood only against the background of the origin of universe especially earth. Most scientists believe chemical evolution, i.e., the formation of bio-molecules preceded the appearance of the first cellular forms of life. The subsequent events as to what happened to the first form of life is a conjectured story based on Darwinian ideas of organic evolution by natural selection. In Chapter 7 – Evolution of Class 12 Biology you will get to know how the diversity of life forms on earth has been changing over millions of years.

Here are the Important topics of Chapter 7 – Evolution of Class 12 Biology:

7.1 Origin of Life

7.2 Evolution of Life Forms – A Theory

7.3 What are the Evidences for Evolution?

7.4 What is Adaptive Radiation?

7.5 Biological Evolution

7.6 Mechanism of Evolution

7.7 Hardy-Weinberg Principle

7.8 A Brief Account of Evolution

7.9 Origin and Evolution of Man

The origin of life is considered a unique event in the history of the universe. The universe is vast. Relatively speaking the earth itself is almost only a speck. The universe is very old – almost 20 billion years old. Huge clusters of galaxies comprise the universe. Galaxies contain stars and clouds of gas and dust. Considering the size of the universe, the earth is indeed a speck. In NCERT of Class 12 Biology Chapter 7 – Evolution you will also study about the Big Bang Theory. The Big Bang theory explains the origin of the universe. It talks of a singular huge explosion unimaginable in physical terms. The universe expanded and hence, the temperature came down.

After going through this chapter that is evolution, you will be able to answer the questions given below:

Q1. Attempt giving a clear definition of the term species.
Q2. Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.
Q3. Find out through the internet and popular science articles whether animals other than man has self-consciousness.

And if still confused then Solutions for NCERT Class 12 Biology of Chapter 7 – Evolution is there for you.

Also, try to attempt all the questions given in NCERT, and in case, if you have any doubt then refer to NCERT Solutions for Class 12 Biology Chapter 7 – Evolution. Here you will get all the answers to those questions which are mentioned in this Evolution chapter and it will help you to score good marks in the 12th board exam as well as other competitive exams.

NCERT Solutions for Class 12 Biology Chapter 7 - Evolution: Solved Exercises Questions

NCERT Solutions class 12 – Biology

Chapter 1

Reproduction in organisms

Chapter 2

Sexual Reproduction in Flowering Plants

Chapter 3

Human Reproduction

Chapter 4

Reproductive Health

Chapter 5

Principles of Inheritance and Variation

Chapter 6

Molecular basis of inheritance

Chapter 8

Human health and disease

Chapter 9

Strategies for enhancement in food production

Chapter 10 

Microbes in Human Welfare

Chapter 11

Biotechnology: Principles and Processes

Chapter 12

Biotechnology and its applications

Chapter 13

Organisms and Populations

Chapter 14

Ecosystem

Chapter 15

Biodiversity and Conservation

Chapter 16

Environmental Issues


NCERT Solutions for Class 12- Subject wise

 NCERT solutions for Class 12 Biology

NCERT solutions for Class 12 Maths

NCERT solutions for Class 12 Chemistry

NCERT solutions for Class 12 Physics

 

Boost Your Preparation with these Knockout courses

 

Recently Asked Questions

 

Related Articles

Exams
Articles
Questions