CBSE Class 12th Biology Syllabus

CBSE has provided another optional subject to the candidates i.e. Biology. Candidates who have chosen Biology the syllabus for them is available at cbse.nic.in. Students who have chosen the stream of PCB are having this subject. Biology is divided into two parts. The first part is being taught in class 11 and the rest of the syllabus in class 12. There are five units in class 12 while the rest five in class 12.

For class 12 Biology has the rest of five units. The Central Board of Secondary Education has provided the name of these units i.e. Reproduction, Genetics and Evolution, Biology and Human Welfare, Biotechnology and its Applications, and Ecology and Environment. These units are further divided into various chapters. Unit 6 contains four chapters, unit 7 three chapters, unit 8 three chapters, unit 9 two chapters while unit 10 has four chapters. The chapters are defined from the number 1 to number 16.


The name of the chapters from one to sixteen are Reproduction in Organisms, Sexual Reproduction in Flowering Plants, Human Reproduction, Reproductive Health, Principles of Inheritance and Variation, Molecular Basis of Inheritance, Evolution, Human Health and Diseases, Strategies for Enhancement in Food Production, Microbes in Human Welfare, Biotechnology – Principles and processes, Biotechnology and its Application, Organisms and Populations, Ecosystem, Biodiversity and its Conservation, and Environmental Issues.

CBSE has also given the name of the periods in which the teacher should complete the units. So, it is a beneficial factor for the students. Unit 6 should be completed in 30 periods, Unit 7 in 40 periods, Unit 8, 9, and 10 in 30 periods. In this way, according to CBSE, the whole syllabus should be completed into 160 periods.

The board also defined the number of marks which these units contain. The total Biology paper is divided into two major parts i.e. theory exams and the practical exam. The total marks that theory part has is 70 and the rest of the 30 marks are given to the practical part.

In the question papers, the questions will have some weightage of marks and that is given here. Unit six has 14 marks, unit seven 18, unit eight 14, unit nine 10 marks, and unit ten contains 14 marks. In total it has 70 marks. TH rest of the 30 marks are given to the practical part.

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As per the latest news, the CBSE Date Sheet 2019 is expected to be releasded in the fourth week of December 2018. The students will be able to give the board exams in the month of February 2019. CBSE will conduct the eams for the vocational subjects while of the core subjects the exams will be held in the month of March 2019.