CBSE Biology Projects for Class 12: Check Project List (2023)

  • Written By Riddhi_G
  • Last Modified 06-10-2022

CBSE Biology Projects for Class 12: Check Project List (1)

CBSE Biology Projects for Class 12: In CBSE Class 12 Biology, the project is a part of theassessment scheme. Students are required to perform a project of their choice based on the curriculum. The CBSE biology project for Class 12 can be related to the human body, plants or animals. Students should choose the project topic that interests them, and they can convey the message clearly.

Students are advised to pick an experiment-based project. Selecting a theory-based project may be a little challenging to make a model based on the project topic. In this article, we have provided students with some Biology investigatory projects in Class 12.

(Video) class12th Biology investigatory project best topics || easy and useful ||

CBSE Biology Projects for Class 12: Overview

The Biology Investigatory project Class 12 CBSE is an important part of the Biology exam. Before checking some of the best projects for Biology Class 12, let us check the CBSE Class 12 exam overview from the table below:

CBSE Class 12Particulars
Exam NameCentral Board of Secondary Education Class 12
Conducting BodyCentral Board of Secondary Education (CBSE)
Exam LevelClass 12
Mode of ExaminationOffline
Maximum Marks70 Marks
Exam Duration3 hours
CBSE Official
NCERT Official

CBSE Biology Investigatory Project Class 12

In the Bio Investigatory project Class 12, the experiments comprise a defined procedure and a number of steps to be followed by the scientific investigators to answer the questions about the natural world. It also includes making an observation, determining a hypothesis, and arriving at an inference or conclusion. Below are some ideas for CBSE Biology Projects for Class 12 on animals, plants, and the human body.

  1. Concentration of Salt in Plant Cell Experiment

Objective: The main purpose behind holding this experiment on a plant cell is to see how the different salt concentrations affect the plant cell’s cytoplasm when exposed to the salt.


  • Microscope
  • Graduated cylinders
  • Red onion
  • Balance
  • Safety goggles
  • Tweezers
  • Table salt
  • Small knife
  • Paper towels
  • Distilled water
  • Paper, pencil
  • A spoon


  1. Gather all the material that is needed for a plant cell science experiment and put on the safety goggles.
  2. Cut onions into two wedge-shaped pieces.
  3. Use an eyedropper to drop the distilled water in the centre of the microscope slide.
  4. With the tweezers, peel the thin layer of the onion wedge and put it in the centre of the microscope slide.
  5. Add a drop of distilled water and one drop of the stain like iodine or eosin on the onion tissue placed on the slide.
  6. Allow the air bubbles to escape by carefully lowering the glass slipcover at an angle above the stained tissue.
  7. Examine the slide under a compound microscope at a magnification of 100X.
  8. Draw a sketch of the image and identify the observed structures.
  9. Prepare a 5 percent solution of salt by adding 5 gms of salt per 100 ml of distilled water in a cylinder. Gently shake th mixture until the salt gets dissolved. Prepare the 10 percent of the solution by adding about 10 gms of salt per 100 ml of the distilled water in another cylinder.
  10. Add 5 percent of the solution with a dropper to one part of the slide. The 5 percent solution should be mixed well with the liquid which is already placed on the onion tissue slide.
  11. Now glide the triangular end of the paper towel under the opposite end of the cover slip. This will mix the liquid on the slide. Add more drops of the 5% solution to complete the introduction of the new solution.
  12. Repeat the process in steps 7 and 8.
  13. Use the dropper again to add a few drops of 10% solution to the 5% solution.
  14. Glide the triangle-shaped part of the paper towel on the opposite end of the cover slip. Use some additional drops of about 10% solution when needed for completion of the new solution.
  15. Repeat steps 7 and 8 for your plant cell science project.

Conclusion: After recording the data, students will learn how different salt concentrations can affect the cytoplasm as well as the growth of the plant.

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2) Haemoglobin Test

Objective: The Haemoglobin test experiment helps students get an idea of the increase in the generation of haemoglobin in a species like Daphnia Magna that responds to the decrease in oxygen concentrations level. It also aims to know the role of haemoglobin in the body and also the effects of an increase in its level on the animal and human body.


  • Culture Kit for Daphnia Magna
  • A microscope or a magnifying glass
  • A digital camera
  • Coloured pencils
  • Sketchbook
  • Petroleum jelly
  • Plastic wrap


  1. Take out the culture kit for Daphnia Magna and follow the instructions to set up and establish the culture. Use the microscope or a magnifying glass to be able to see the small details of their bodies. Take a picture of the initial culture with the digital camera and then draw a sketch of the individual Daphnia. students can also use a bit of petroleum jelly in order to hold the individual Daphnia for the purpose of further observation. Students should ensure that they colour the sketch in an accurate manner with the help of different coloured pencils.
  2. Arrive at your own hypothesis. What will happen to Daphnia if the concentration of oxygen in the environment goes down and why? Feed the Daphnia in order to prepare it for the low oxygen level experiment.
  3. Cover the surface of water carefully in the aquarium with plastic wrap. It will prevent the gases from leaving or entering the surface of the water. When the Daphnia uses oxygen and produces carbon dioxide, the dissolved oxygen concentrations in the water will drop. Observe the Daphnia for the next two to three weeks. every day, take a picture of the entire population and take notes of the changes happening. Students need to pay keen attention to the colour of the Daphnia. As they are also called the transparent species, the change in their colour will be a direct outcome of the change in their blood and the haemoglobin synthesis.
  4. After about 2 to 3 weeks, take off the plastic wrap, take a picture of the population, and prepare another sketch of the individual Daphnia. Colour the sketch properly in order to represent the accurate changes that took place. Feed the culture and then allow it to get used to the normal conditions without the use of the plastic wrap. Take down notes on it every day and also the pictures. After nearly a week, if you notice that they are getting back to normal, sketch the other daphnia.
  5. State your inference based on your hypothesis.

Conclusion: Daphnia Magna, the small crustaceans living in freshwater lakes, ponds and streams, feed on the algae and are known to be very sensitive to bad water conditions. These are also used by scientists to determine the quality of water. Haemoglobin is a protein which is present in our blood and carries oxygen from the lungs to cells of various living organisms. The experiment changes the oxygen levels of the water where Daphnia are placed to evaluate the production of haemoglobin in these creatures.

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FAQsRelated to CBSE Biology Projects for Class 12

Q.1: How many chapters are there in CBSE Class 12 Biology?

Ans: In CBSE Class 12 Biology, Social Science, there are a total of 15 chapters.

Q.2: Where can I get the CBSE Biology projects for Class 12?

Ans: Students can get some ideas for the CBSE Biology projects for Class 12 from this page and the CBSE official website.

(Video) class 12th biology project file

Q.3: What are the Biology projects for Class 12 CBSE on biotechnology?

Ans: Some Biology projects for Class 12 CBSE on biotechnology are the effects of fertilisers, manure, and polythene on the rate of elongation of the Hypocot, the effect of alkalines and acids on bacterial growth, use of spices in the preservation of food.

Q.4. From where can I get CBSE Class 12 Biology books?

Ans: Students can download the CBSE Class 12 Biology books from Embibe and also from the NCERT official website.

Q.5. Which is the best project for biology Class 12 CBSE?

Ans: There are many good projects for biology Class 12. Students should select one based on his/her interest.

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Related links,

CBSE Class 12 BiologyCBSE Class 12 NCERT Books
NCERT Solutions Science Class 12CBSE Class 12 Syllabus


Which reference is best for class 12 biology? ›

Best Reference Books for Class 12 CBSE Biology 2022
  • CBSE Biology Chapterwise Solved Papers class 12th by Arihant Expert.
  • Together with Biology by S.Chand Biology by Campbell and Reece.
  • NCERT class 12 Biology Textbook.
  • S.Chand's Biology for class XII by B.P. Pandey.
  • Pradeep's A Text Book of Biology class 12 by P.S. Dhami.
17 Jan 2022

Which chapter is most important in biology class 12? ›

Therefore, this article discusses the most critical chapters of class 12 based on the NEET Biology syllabus.
Biology Class 12 Most Important Chapters for NEET 2022
  • Reproduction in Organisms.
  • Sexual Reproduction in Flowering Plants.
  • Human Reproduction.
  • Reproductive Health.
15 Jul 2022

What is investigatory project Class 12? ›

Investigatory projects are part of obligatory assignment involving purely experimental procedures so that you report on, duplicate, or adapt something that someone else has already discovered. It may involve some other form of investigation also.

What should I do for my biology project? ›

4 Biology Project Ideas for High School Students
  1. Testing plants and gravity. Testing root growth in relationship to gravity is a fun and simple idea. ...
  2. Fruit flies and tea. Tea is often offered as a healthful drink, but which tea is the most healthful? ...
  3. Cleaning oil off birds. ...
  4. Vitamin C and colds.

Which is better arihant or Xam idea? ›

Answer. Answer: Books are better in their own sense. Arihant teaches you concepts and give you examples and practice problems so it is better while you are studying but when time of revision comes ten XamIdea is better as it covers the whole chapter which makes revision easier and helps you to recollect better in exam.

Which book is best for 12 CBSE? ›

Ans: Yes, NCERT books are the basic books to study for CBSE Class 12 board exams. Students can also refer to advanced books but only after developing a strong base in concepts from NCERT textbooks.

Which reference book is best for class 12 board? ›

Oswaal CBSE 6 Years' Solved Papers, Class 12, Science (PCMB) (English Core, Physics, Chemistry, Mathematics, Biology) Book. If you want to go for a single book that will help you revise for almost all your subjects, this one can be a good option for CBSE Class 12 students who are preparing for 2023 board exams.

Is there 97 chapters in NEET? ›

There are altogether 97 topics in NEET Physics, Chemistry & Biology syllabus. Divide them according to the complexity and make your study-plan.

Which is the toughest chapter in class 12 Biology? ›

I think you should start with genetics as it is the most important and difficult topic of class 12th. You should not leave it. Then you should go for ecology and biotech as they are comparitively easy and a number of questions are asked from them. They are more scoring.

Is Class 12 Bio hard? ›

It is difficult for some students to prepare for the Class 12 Biology Board exam. If they want to top in Class 12 Biology exam then they have to study hard.

Which topic is best for research in science? ›

15 Good Science Topics for Research Papers
  • The Big Bang theory.
  • Creationism and evolutionary biology.
  • The work of the Kepler telescope.
  • The viruses in the modern world.
  • The map of the human genome.
  • History of map extinctions.
  • How does DNA work?
  • Mobile computing in the contemporary world.

What are the best topics for investigatory projects? ›

Broad subjects for investigatory projects include biology, chemistry, the environment, earth science, physics, astronomy and everyday life. Students must approach a problem and test an idea (hypothesis), research the topic, answer questions and think through the subject.

Which topic is best for research in botany? ›

Botany Research Topics
  • Innovations in plant research and influence on agriculture.
  • Plant stress physiology.
  • Plant growth control.
  • Crop science – recent developments.
  • Fungi – Structure and types.
  • Current findings in the study of plant fossils.
  • Photosynthesis.
  • Genetic inheritance in plant species.
6 Feb 2020


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