Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store

CBSE Sample Question Papers For Class 12 Biology 2023 - Mock Paper 1

ffImage
Last updated date: 29th Mar 2024
Total views: 790.8k
Views today: 8.90k
MVSAT 2024

Biology Mock Paper-1 for CBSE Class 12 Board Exams

Biology is a subject that finds a special place among the students, because of the interesting facts and details students get to learn in it. The students are interested in learning the various facts about the world and our bodies as well. And thus, to help the students in developing a precise understanding and obtaining good marks in examinations Vedantu makes sure that the students are given the best study materials and guidance possible. The sample questions provided by Vedantu are also very helpful and insightful for the students preparing for the board examinations. 


The sample questions for biology is excellent practice material for the students. They can revise the syllabus and figure out the areas that might require their attention. The sample questions will also help the students get an idea of how the questions appear in the actual exam.  The students can easily download this on the website of Vedantu and can save it in PDF format for future use. Let us have a look at the important topics of the chapters which can be useful for the exams.

Competitive Exams after 12th Science

CBSE Sample Question Papers For Class 12 Biology 2023 Released By Board - Mock Paper 1

Chapter 1 Reproduction in Organisms

Chapter 1 of Class 12 Biology talks about types, modes and the process of reproduction in different organisms. The chapter also mentions asexual reproduction, sexual reproduction, pre-fertilization events, fertilization, post-fertilization events etc.

 

Chapter 2 Sexual Reproduction in Flowering Plants

Chapter 2 of Class 12 Biology is a combination of four chapters and holds a weightage of fourteen marks in the 12 board examinations. It is indeed a very important chapter if a student wishes to score high marks in the Biology exam. It talks about the structure, morphology, and process of sexual reproduction in flowering plants.

 

Chapter 3 Human Reproduction

Chapter 3 of Class 12 Biology teaches students about the human male and female reproductive systems. Diagrams, illustrations, flowcharts, and easy language makes this chapter comprehensive and easy to learn.

 

Chapter 4 Reproductive Health

Chapter 4 of Class 12 Biology is one of the highest-scoring chapters and focuses on the issues of the significance of reproductive health and the methods to achieve it. It also talks about maternal health and the health of the child during pre-pregnancy, pregnancy, and post-pregnancy periods.

 

Chapter 5 Principles of Inheritance and Variation

Chapter 5 of Class 12 Biology basically revolves around Genetics and Evolution. Similarity and variation between the parents and offspring are discussed in this chapter. Mendel”s law of inheritance, the inheritance of one gene, the inheritance of two genes, sex determination, mutations, and genetic disorders are the main topics discussed here.

 

Chapter 6 Molecular Basis of Inheritance

Chapter 6 of Class 12 Biology is a highly scoring chapter. In this chapter, very simplified diagrams are given to understand all the structures of DNA, RNA, the process of replication, etc.

 

Chapter 7 Evolution

Chapter 7 of Class 12 Biology revolves around topics related to the origin of life and the evolution of life forms or biodiversity on planet earth.

 

Chapter 8 Human Health and Disease

Chapter 8 of Class 12 talks about Biology Health, maintenance of optimum health, diseases, types, treatment and prevention, immunity, and their types and address some diseases such as AIDS, cancer, and adolescent issues.

 

Chapter 9 Strategies for Enhancement in Food Reproduction

Chapter 9 of Class 12 Biology deals with biological principles applied to animal husbandry and plant breeding that have a major role to increase food production. Several new techniques like embryo transfer technology and tissue culture techniques that play a pivotal role in further enhancing food production are discussed in this chapter.

 

Chapter 10 Microbes in Human Welfare Solutions

Chapter 10 of Class 12 Biology talks about Microbes which are also referred to as micro-organisms or microscopic organisms as they can only be seen under a microscope. Being tiny living creatures, they are invisible to the naked eye and are present all around us, in air, water, soil and so on.

 

Chapter 11 Biotechnology: Principles and Processes

Chapter 11 of Class 12 Biology deals with an in-depth study of principles and processes involved in biotechnology.

 

Chapter 12 Biotechnology and its Applications

Chapter 12 of Class 12 Biology talks about how human beings have used biotechnology to improve the quality of human life, especially in the field of food production and health.

 

Chapter 13 Organisms and Populations

Chapter 13 of the Class 12 Biology Textbook talks about Organisms and Populations. In this chapter, students will get to explore ecology at the organismic and population level. Important topics are organisms and their environment, niche, major abiotic factors affecting the organisms and their environment such as temperature, water, light, soil, etc.

 

Chapter 14 Ecosystems Solutions

Chapter 14 of the Class 12 Biology Textbook talks about Ecosystems, which can be visualized as functional units of nature, where living organisms interact among themselves and also with the surrounding physical environment.

 

Chapter 15 Biodiversity and Conservation

In this chapter, students will learn about the importance and significance of biodiversity, its types, patterns, evolution, degradation, and conservation.

 

Chapter 16 Environmental Issues

Chapter 16 in Biology talks about the problems that are posing a threat to the ecological balance in nature such as pollution, global warming, deforestation, etc. and how they can be controlled. This chapter also covers the effects of pollution on human life and how it is affecting human life.

 

CBSE Class 12 Biology 2023 Term 2 Weightage

Here you can check CBSE Class 12 Biology 2023-24 Term 2 Weightage.

Units

Term 2

Marks

VIII

Biology and Human Welfare: Chapters – 8 and 10 

14

IX

Biotechnology and its Applications: Chapters – 11 and 12 

11

X

Ecology and Environment: Chapters – 13 and 15 

10

Term 2 Total Theory Marks

35

Term 2 Practical  Marks 

15

Total

50

 

Benefits of CBSE Class 12 Biology 2023 Sample Papers Released By Board

Here are some of the benefits of referring to Class 12 Biology Term 2 Sample Papers:

  • You will be aware of the Class 12 Biology Term 2 Marking scheme.

  • Solving sample papers repeatedly will improve your speed of solving questions papers. Also, solving sample papers repeatedly helps you to make fewer mistakes in actual exams.

  • Sample papers help you to quickly revise the important topics in less time.

  • Practising sample papers regularly will make you aware of the type of questions asked in the Biology board exam. This will help you to get relieved from exam pressure and nervousness.

  • Sample papers help you to analyse weaker sections and you will be able to focus more on weaker areas to get good scores.

FAQs on CBSE Sample Question Papers For Class 12 Biology 2023 - Mock Paper 1

1. Elaborate on the adaptation of desert plants and animals.

The plants in the desert areas are seen to have small leaves, in some cases no leaves at all. The photosynthesis in these plants is carried out by the stems. These stems have the property of becoming succulent and thus they can store water. On the other hand, the animals in the desert areas are seen to be smaller in size, compared to the animals seen in colder climates. The reason behind this is that the heat gained from the environment is always proportional to the body surface, and so the majority of animals living in the desert regions have smaller bodies. An example of this is the kangaroo rats. They rarely drink water and most often feed upon dry seeds and other dry plant materials.


For more insight into the topic, the students should refer to Vedantu. All the relevant and important materials to prepare for the board examination can be accessed on the site. 

2. What is the difference between innate and acquired immunity?

Innate immunity, also given different names like inherent immunity, natural immunity or non-specific immunity consists of the defence elements that every individual is born with. These elements perform the function of protecting the body. They perform the function of the psychological barrier and keep an update on the growth of the pathogenic micro-organism.


Acquired immunity, on the other hand, is also called adaptive or pacific immunity. This is acquired from antibiotics. They respond to antigens or any infectious disease.

3. The offerings formed by asexual reproduction are called clones. why?

Asexual reproduction is a term used to refer to the type of reproduction in which a single individual is responsible to give birth to an offspring. These offerings produced are genetically and morphologically similar to each other. They are also similar to their parents. The term clone refers to individuals having the same genetic and morphological similarities and characteristics. This is the reason that the offspring produced as a result of asexual reproduction are called clones. 


For more such insight into the chapter, the students should refer to the website of Vedantu.

4. What are the advantages of selecting a pea plant for an experiment by Mendel?

Mendel selected the pea plant to experiment. The reason for these are;

  • The pea plants are plants with a short lifespan, but they tend to give results faster, in most cases, within 3 months. 

  • The growth of the plant does not demand extensive labour except at the time of the pollination.

  • The F1 hybrids are always fertile.

  • There are seven pairs of contrasting characters detectable.

  • These plants have true-breeding self-pollination.

For more insight into the chapter, the students can refer to Vedantu. 

5. How to prepare for class 12 biology Board exams?

To score well in the 12th board exams, the first thing that the student needs to do is to form a timetable, allotting equal time to all the subjects. The students should make sure that they complete their assignments on time so that nothing is left behind during the examination period. For a subject like Biology, the students need to remember all the biological terms and practice the important diagrams. To assist the students to achieve this, Vedantu provides the students with the required materials. This will help and guide them to perform well in their examination.