CBSE stands for Central Board of Secondary Education. It conducts exams for Class 9 and takes the responsibility of creating the CBSE Syllabus for Class 9 Biology. All students are encouraged and advised to have detailed knowledge regarding the CBSE Class 9 Biology syllabus in order to have a clear and concise idea about the exam pattern, upcoming exams, and marking scheme. In this article, students will know about the CBSE Class 9 Biology question paper details for the academic year 2021-22. These details include the names of the units, main topics, marking scheme, and practical examples.
Biology is one of the major concepts of science and includes the study of living organisms and life. The chapters of Class 9 Biology cover various topics like cell theory, matter, and tissues. These topics help to lay a solid foundation for higher education. All the chapters are further incorporated in secondary studies and higher classes.
CBSE Class 9 science syllabus
The overview of science units and marking scheme is as follows:
| Unit No. | Unit Name | Marks | Periods |
| I | Matter – Its Nature and Behavior | 23 | 50 |
| II | Organization in the Living World | 20 | 45 |
| III | Motion, Force and Work | 27 | 60 |
| IV | Our Environment | 06 | 15 |
| V | Food; Food Production | 04 | 10 |
| Total | 80 | ||
| Internal Assessment | 20 | ||
| Grand Total | 100 |
Class 9 CBSE Biology Chapters
The biology chapters are listed as follows:
| Chapters | Chapter Name |
| I | Cell – The Fundamental Unit of Life |
| II | Tissues |
| III | Diversity in Living Organisms |
| IV | Why Do We Fall Ill (Health and Diseases) |
| V | Natural Resources |
| VI | Improvement in Food Resources |
Biology holds 30 marks in total. Unit II “Organization in the Living World” is of 20 marks, Unit IV “Our Environment” consists of 6 marks, and Unit V “Food: Food Production” consists of 4 marks. The biology portion contains the maximum number of marks (30 marks) in the question paper, and also the highest number of questions. The remaining 50 marks are distributed between the physics and chemistry portions.
Detailed chapter-wise analysis of CBSE Class IX Biology
The Class 9 Previous year question papers 2021 detailed chapter-wise analysis of Biology is as follows:
| Unit | Chapter Analysis | Periods |
| Unit II – Organization in the Living World | Cell – The Fundamental Unit of Life – The first chapter contains the basic unit of life, prokaryotic and eukaryotic cells, cell membrane, organelles, and cell inclusions are described. Tissues – Tissues chapter contains the structure and functions of plant and animal tissues. It further expands to four types of animal tissues. Diversity in Living Organisms – It includes the biological diversity of animals and plants, important groups of plants, animals, and a hierarchy of categories. Health and Diseases (Why do we fall ill) – It includes infectious and non-infectious diseases and their causes. It also includes how to prevent diseases and what causes health issues and sickness. | 45 |
| Unit IV – Our Environment | Natural Resources – The chapter contains physical and natural resources of the environment such as air, water and soil. It explains the significance and role of the resources. It further consists of biogeochemical cycles in nature. | 15 |
| Unit V – Food Production | Food: Food Production – The chapter contains the concepts like organic farming, use of manures and fertilizers. It explains the animal and plant breeding and selection of the right food. | 10 |
As stated in the table above, three units consist of biology topics. Unit II states the basic unit of life i.e., cell, prokaryotic and eukaryotic cells, cell wall, cell inclusion and cell organelles. They further have different types like chloroplast, vacuoles, nucleus, chromosomes, mitochondria, etc. The second chapter in the unit is “Tissues,” and it explains the structure and functions of plant and animal tissues. It further expands to four types of animal tissues. The chapter “diversity in living organisms” includes the biological diversity of animals and plants, important groups of plants, animals, and a hierarchy of categories. The next chapter is “health and diseases” in the unit, and it includes infectious and non-infectious diseases and their causes. It also includes how to prevent diseases and what causes health issues and sickness.
The next unit “Our Environment” includes one chapter, Natural Resources. The chapter details physical and natural resources of the environment such as air, water, and soil. It explains the significance and role of the resources. It further discusses biogeochemical cycles in nature. The last Unit “Food Production” also includes one chapter, and it contains concepts like organic farming and the use of manures and fertilizers. The chapter also explains animal and plant breeding and how to select the right food products for animals and plants.
Class 9 CBSE science previous year question paper format
| Sections | Total Questions | Marks |
| Section A | 1 – 4 | 4 |
| 5 – 13 | 18 | |
| 14 – 22 | 27 | |
| 23 – 25 | 15 | |
| Section B | 26 – 41 | 16 |
| Total | 80 | |
| Internal Assessment | 20 | |
| Grand Total | 100 |
The above table shows the overall marks distribution in the question paper. The first four questions are very short answer type ones of one mark each. The next nine questions are short answer type ones of 2 marks each. Questions 14 to 22 are short type ones of 3 marks each, and questions 23 to 25 are long answer type ones of four marks each. Section B of the question paper has 16 multiple choice questions of one mark each.
FAQs of Class IX CBSE Biology
1. Which type of farming system yields healthier grains?
Organic farming, as the name suggests, is organic in nature. It yields healthy crops for animals and humans. It is healthier compared to non-organic farming. This type of farming uses organic manure, and all the waste is recycled through proper channels. It also involves little to no use of synthetic chemicals in the production of grains.
2. Mention any two medicinal uses of isotopes.
The two medicinal uses of isotopes are as follows:
- Isotope of Cobalt – Cancer treatment
- Isotope of Iodine – Goitre treatment
3. Are plastids present in animal cells? Name the two common types of plastids.
Plastids are not present in animal cells. They can only be found in plant cells. The two common types of plastids are leucoplasts and chromoplasts.
4. What are the two conditions that are required for a human being to be in good health?
The two conditions for good health are the physical surroundings and the economic status of the human being. These will contribute to the good health of a person.
5. Which division among plants has the simplest organisms?
The thallophyta division among plants has the simplest organisms.