NCERT Solutions For Class 12 Biology Chapter 7: Evolution

NCERT Solutions for Class 12 Biology Chapter 7 Evolution are provided in this article. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students appearing for CBSE Class 12 Exam 2022-23. The important topics that are included in this chapter are:

• Origin of life
• Biological Evolution 
• Darwin's contribution
• Mechanism of evolution 
• Genetic variation
• Human evolution

Expected no. of Questions: 3-4 questions of around 6 marks.

Download PDF: NCERT Solutions for Class 12 Biology Chapter 7 Evolution

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NCERT Solutions for Class 12 Biology Chapter 7

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Class 12 Biology Chapter 7 Evolution: Important Topics

Evolution refers to a theory describing the growth and the change in the characteristics of a species as it moves from generation to generation. The growth of the species depends on the natural selection process of organisms. The important topics that are covered in this chapter are:

• Origin of Life

The origin of life begins with the origin of the universe. The universe, an old vast, and empty space comprising galaxies originated around 20 billion years ago. According to some experts, life came from outer space as spores while another set of experts explained that life came from a non-cellular component such as decaying matters like mud. The latter theory came to be considered as the theory of spontaneous generation, which was discarded later.

• Biological Evolution

Evolutionary biology is considered to be a branch of biology that deals with the processes that are responsible for the evolution and diversity of life on earth. It includes from the very first ancestor to all life on earth to the very first modern human ancestor.

• Darwin’s Contribution

Carles Darwin, the father of evolution, has a large contribution to the establishment of the theory of evolution. His theory helped in removing all the conventional old beliefs which said that the formation of various species was a supernatural phenomenon or act of the Almighty.

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