NCERT Book for Class 12 Biology Chapter 7
FAQs on NCERT Books Free Download for Class 12 Biology Chapter 7 – Evolution
1. On what platform Class 12 students can get NCERT books free download for Class 12 Biology Chapter 7 Evolution?
Class 12 students can get the NCERT books free download for Biology Chapter 7 Evolution on Vedantu. On this educational website, Class 12 students will be able to access any type of content for free to study the Biology subject. It provides chapter-wise study materials including revision notes, important questions, NCERT solutions, past years' question papers, sample papers, etc. Plus, it also provides free online lectures for each subject and chapter to help Class 12 students with their studies. These facilities are helpful to score good marks in 12th Board Examinations.
2. What topics are covered in Chapter 7 Evolution Class 12 Biology?
There are 9 topics that Class 12 students will study in Chapter 7 Evolution of Biology subject. These are as follows.
Origin of life
Evolution of life forms- Charles Darwin Theory and Alfred Wallace Concept of Living
What are the pieces of evidence for Evolution?
What is Adaptive Radiation?
Biological Evolution
Mechanism of Evolution
Hardy-Weinberg Principle
A Brief Explanation on Evolution
Origin and Evolution of Man
Students can understand these concepts from the Class 12 Biology NCERT Book that is available for free of cost to download on Vedantu’s website and mobile app.
3. How can Class 12 students answer tough questions of Chapter 7 Evolution in Biology NCERT book?
To answer tough questions of Chapter 7 Evolution in Biology NCERT book, Class 12 students have to concentrate on learning fundamental concepts of the chapter. They should give priority to core concepts rather than working hard on other areas. A clear understanding of concepts not only enable students to solve tricky questions in board exams but also allow them to implement fresh ideas for future studies. Students who aspire to clear NEET and other medical entrance exams should have a thorough comprehension of concepts like the mechanism of evolution, biological evolution, evolution of man, Hardy-Weinberg principle, etc.
4. Write the differences between convergent and divergent evolution.
The differences between convergent and divergent evolutions are as follows:
- Convergent Evolution- Convergent Evolution is the development of similar adaptive functional structures in different and unrelated groups of organisms. Convergent evolution is shown by Analogous orgAns: Examples- Placental mammals and Australian Marsupials, aquatic vertebrae and wings of birds, insects and bats, bodies of sharks and dolphins.
- Divergent Evolution- Divergent Evolution is the development of various functional structures from common ancestral organisms. Divergent evolution is shown by homologous orgAns: Examples- Darwin's Finches, locomotion in mammals, Australian Marsupials.
5. What are homologous and analogous organs?
Homologous organs are defined as the organs of different organisms or animals that have evolved from a similar structure but have different functions. The structure of two varied organisms is the same but the functioning of their organs is different. Examples- forelimbs of man, frog and the flippers of the whale.
Analogous organs are defined as the organs of different organisms or animals that have a different structure but perform the same function. Analogous organs are adapted to the same ecological niche of other animals. Examples: wings of insects, birds and bats.