Evolution Class 12 Notes
Chapter 7 Evolution
The CBSE Class 12 Biology chapter 7 covers the concepts related to Evolution. Like all the other chapters in the NCERT textbooks, chapter 7 is followed by an exercise for students to solve. Students preparing for other competitive exams and Board exams can refer to Vidyakul’s NCERT notes for chapter 7 Biology to prepare and analyze their preparations accordingly. These practice questions make it easier for students to comprehend the concept. Moreover, Vidyakul’s subject experts have offered explanations for over 50 concepts such as the evolution of life forms, the evolution of man, biological evolution, etc.
CBSE CLASS 12th BIOLOGY CH-7
Points to Remember
Students can go through the following points to score well and achieve excellent results in the Class 12 Biology exam:
Evolution is often referred to as the study of the origin and development of life forms on earth.
Evolution answers questions like how did humans appear on earth and how different kinds of organisms exist in different habitats.
The first organisms could be single-cell organisms that lived in a water medium. These single-cell organisms eventually evolved into larger organisms over millions of years.
The expansion of the observable universe, according to the Big Bang theory, began with a large-scale and violent explosion of a small, primordial “super-atom.”
Homologous organs are found in forms that show adaptive radiation from a common ancestor, indicating ‘divergent evolution.’
Analogous organs are anatomically distinct and unrelated organs that serve similar functions.
Vestigial organs are rudimentary and non-functional organs that correspond to fully developed and functional organs in related organisms.
Molecular evidence entails determining evolutionary relationships by identifying conservation in DNA and protein sequences.
Topics and Sub-topics
The Molecular Basis of Inheritance in Genetics is one of the most interesting chapters. Students who have already gone through the Genetics section in previous classes are likely to enjoy this chapter. Students can find difficulty in some concepts. Therefore, going forward students can practice accordingly.
The NCERT notes for Class 12 Biology Chapter 6 deal with various important subtopics such as DNA, RNA, replication, transcription, and more. Thus, practicing the questions from each of these subtopics from Vidyakul will help the students stay ahead of their peers. Therefore, by referring to these materials, they will soon be able to ace the learning in no time.
Frequently Asked Questions
What is ‘Adaptive Radiation’?
Adaptive radiation is a rapid increase in species with a common ancestor.
What is meant by ‘genetic drift’?
Genetic drift refers to random fluctuations in the frequencies of alleles from generation to generation due to chance events.
What is an ‘Allele’?
An allele is one of two or more versions of a gene.
Practice Questions
Write a brief account of Evolution?
List out the 5 mechanisms of evolution?
What is Charles Darwin’s theory of evolution?
What Is Adaptive Radiation? Explain with examples.
Evolution is often referred to as the study of the origin and development of life forms on earth.
Evolution answers questions like how did humans appear on earth and how different kinds of organisms exist in different habitats.
The first organisms could be single-cell organisms that lived in a water medium. These single-cell organisms eventually evolved into larger organisms over millions of years.
The expansion of the observable universe, according to the Big Bang theory, began with a large-scale and violent explosion of a small, primordial “super-atom.”
Homologous organs are found in forms that show adaptive radiation from a common ancestor, indicating ‘divergent evolution.’
Analogous organs are anatomically distinct and unrelated organs that serve similar functions.
Vestigial organs are rudimentary and non-functional organs that correspond to fully developed and functional organs in related organisms.
Molecular evidence entails determining evolutionary relationships by identifying conservation in DNA and protein sequences.
What is ‘Adaptive Radiation’?
What is meant by ‘genetic drift’?
What is an ‘Allele’?
Write a brief account of Evolution?
List out the 5 mechanisms of evolution?
What is Charles Darwin’s theory of evolution?
What Is Adaptive Radiation? Explain with examples.
Learn more about it in Evolution Class 12 Notes pdf.
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