150+ CBSE Class 12 Biology Project Topics 2026

CBSE class 12 biology project topics consists of various subjects regarding plants and animals life, life stages of living things, human body parts and its functions and many more. Check here 150+ CBSE Class 12 Biology Project Topics 2026!

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The Investigatory project topics under CBSE class 12 biology practical exam 2026 include Human Reproduction, Mechanism of Inheritance, Evolution, Human Health, and Diseases. It consists of various activities and project work from the CBSE class 12 syllabus.

The project component in the CBSE class 12th exam 2026 is for a total of 20 marks and hence, an important component in the exam. Hence, students need to choose the correct project topic to score well in the exam.

Students can check the unique topics for the Class 12 Biology Project PDF in this article. The bio project topic class 12 are selected by the teachers from the best CBSE 12th books for better exam preparation.

Top 10 CBSE Class 12th Biology Project Topics 2026

There is a wide range of topics that students can work with regarding their CBSE class 12 Biology Project Topics 2026. Candidates can choose unique topics for class 12 biology project PDF stated below.

1. Examine pH of Different Water Samples

Under the CBSE class 12 Biology Investigatory project topics 2025-26, Candidates must study the pH level of Water and its properties. The pH level of 6.5 to 8.5 is healthy and safe for drinking. Water with a pH level of 3 to 5 is very acidic. Candidates must take the universal Indicator, Litmus paper, and different water samples and test the pH level for each of them.

Required Materials: Various water samples, universal indicator and litmus paper.

2. Examine the Effect of pH on Seed Germination

The pH of the germinating medium influences seed germination. The quantity & type of different minerals, along with the quantity and quality of humus, hold the pH in soils. An exact level of pH is required for other seeds for maximum germination. The level of pH also impacts the growth and development, reproduction and metabolism of the plant.

Required Materials: 125 seeds of various types, pH buffers, purified Water, Petri plates, and blotting paper.

3. Growing Yeast Process of Sugar Fermentation

This fungus is composed of eukaryotic microbes, i.e., cells with nuclei. Fermentation is the method of breaking down a substance by bacteria, microorganisms or yeast. Yeast starts working when mixed with sugar as it smashes down due to fermentation. As a result, it does not cause any reaction.

Required Materials: 3 clear cups, sugar, Water, & marker pen.

4. Impact of Sugar on Bean Plant Growth

Candidates must assess if adding sugar to Water enhances plant growth and health. Sugar provides additional energy, and plants should grow stronger and healthier. It can be observed through visual inspection and comparison of samples with and without sugar.

Required Materials: Bean seeds, distilled Water, Water with added sugar, cotton, and beaker.

5. Effects of Diet on Blood Glucose

Candidates must explore the correlation between blood glucose levels and diet in non-diabetic individuals, as high-carbohydrate meals increase blood glucose levels while low-carbohydrate diets decrease them.

Required Materials: A glucometer for measuring blood glucose levels before meals and after meals for four non-diabetics.

6. Characteristics Affecting Nodule Formation in Legumes

Candidates must try to determine which factors are essential in the formation of nodules on legumes. The Rhizobium leguminosarum bacteria fix nitrogen for a vegetable plant in exchange for shelter and nutrients.

Required Materials: Students will require 12 pots, 2 bags of vermiculite, a bag of potting soil, 36 snow pea seeds, Bacteria (Rhizobium leguminosarum), nutrient broth, an inoculating loop, and a Bunsen burner.

7. Proof Light Colour Affects Plant Growth

Students must observe how different light colours affect plants' growth. Students must place plant pots under different boxes, let them grow, and record their sizes.

Required Materials: 5 boxes with different coloured transparencies(red, blue, green, yellow and clear)on top and front, seeds, potting plant, and rulers. Students must place plant pots under different boxes, let them grow, and record their sizes.

8. Mechanism of Seed Sprouting

Students must determine bean seed growth speed in various germinating solutions. They should soak seeds in distilled water, hydrogen peroxide, malt, humic acid, potassium nitrate, and fish emulsion, then record germination results over 4 days. Then, they must record the results and observe the growth of seeds.

Required Materials: Students will require Plastic zip bags, different types of foods(fruits, bread, cheese, meat), spray bottles, and water.

9. Effects of Microwave Radiation on Different Organisms

Students must observe microwave radiation's effects on fungi, bacteria, and plant life. It is recommended that students use microwave ovens to heat certain ingredients and fats in the food by radiating high levels of energy. On the other hand, other substances remain unaffected.

Required Materials: Students will require Radish seeds, baker's yeast, Petri dishes with agar, paper towels, bowls, gloves, a microwave, a notepad and a pen.

Also Check: CBSE Class 12 Economics Project Topics

List of 150+ CBSE Class 12 Biology Project Topics 2026

There are numerous biology project topics for class 12 for students to explore and learn. Candidates can go through some amazing topics to work on their CBSE class 12 biology project below.

Effects of Different External Factors in Changing the Effectiveness of Various Antibiotics
Can I Eat That
Effectiveness of Various Spices in Promoting or Inhibiting the Spoilage Rate of Food
There's a Germ Out There
Study of the Effects of Green Tea on Oral Bacteria
Mystery Behind Bacteria Levels in Gym Equipment
Fungus Among Us
Yeast Past Its Code Date
Demolishing Dental Bacteria
Does the Surface Clarity of Plastic Bottles Affect Solar Water Disinfection
Effects of Temperature on Bacterial Pigmentation
Isolation of Staphylococcus aureus from Raw and Pasteurised Milk
Is Garlic Antibacterial
How Much Bacteria Is on Your Retainer
What Is the Best Way to Clean Your Toothbrush
Study of Bacteria Growth in Varying Acidic Environments
Which Acne Medications Are Most Effective
Beleaguered Beef
Study of the Health Benefits of Spicy Cooking
What Are the Effects of Ultraviolet Light on Bacterial Mortality
The Five-Second Rule
Bacteria Affected by Ultraviolet Light
Do Bacteria Like Gases
Raw meat
pH Tolerance of Microbes
Which Ground Beef Has the Least Bacteria
Do Different Dilutions of Disinfectants Affect the Development of Bacterial Resistance
Study On Gene Therapy
Study Of Effects Of Antibiotics On Microorganisms
To Study the Coagulable And Non-Coagulable Milk Proteins
Mitosis in Onion Root Tip Cells
Cellulitis
What Music Do Bacteria Enjoy the Most
How Does Light Affect Yeast Drug Addiction
Possible Effects of Maternal Behaviour on Foetal Development
Pollination
To Study Drug Resistance In Bacteria Using Antibiotics
The Effect of Oil Spills on Oceans
Effects of Fertilisers, Manure and Polythene on the rate of elongation of the Hypocotyl
Spermatogenesis
Study on Enzymes
Coffee Addiction
Effects of Fertilisers, Manure and Polythene on the rate of elongation of the Hypocotyl
Alzheimer's And Dementia
Microbes in Human Welfare
Detailed Study on Infertility, Its Causes and Treatment
Eye Diseases
DNA Fingerprinting
Recombinant DNA Technology In Today's Medicine
How to See DNA with the Naked Eye
Human Genome Project
Dispersal of Seeds
Harmful Effects of Mobile Radiation
On Recent Diseases - Ebola
Sickle Cell Anaemia and its Prevention
How Cigarettes Affect Your Health
Study on Probiotics and their Preparation
The Way Blood Works
Testing the toxicity of Marine Pollutants using Daphnia
Antibiotics Naturally
What is the Best Way to Disinfect a Toothbrush
Erasing and Implanting Human Memory
Do Price and Vitamin C Affect How Fast Fruits Rot
Strawberry DNA Extraction
Effect of Cannabis on the Human Body
Ability of Curry and Cinnamon to Inhibit Bacterial Growth
Which Cheese Grows Mould The Fastest
Using Garden Mulch to Make a Bug Zoo
Turning to Motor Learning
Eye Disorders in Children and Adolescents
Human Cloning: Another You?
Thigmotropism In Tendrils
Brush Away You Smile
Eye Can See You
Can Dog Drool Kill Germs
Growing Yeast: Sugar Fermentation
How Does Mould Grow
How Does Microwave Radiation Affect Different Organisms
What Effect Does Glucose Have on the Longevity of Cut Flowers
Diffusion VS Food Colouring
Microwave and Germination of Seeds
Comparing Varying Levels of Oxygen Aeration in Increasing Plant Production
Salt: Friend or Foe
Cattails in the Water
Cloning 101
Heart Rate and Video Games
Investigating Seed Tolerance for Freezing Temperatures
Fun with Phosphorus
What Angle of Impact Has the Most Effect on Making a Bruise
Ultraviolet Radiation
Do Rats Learn Faster with Peer Pressure
Can You Make the Grade
The Effect of Alkalis and Acids on Bacterial Growth
Saving the World One Yard at a Time
Yeast Reproduction in Sugar Substitutes
Angina Pectoris
Pedigree Analysis
Urinalysis
Ozone Depletion
Does a Mouse Rely More on Its Spatial Memory or Vision
Conserving Agricultural Irrigation Water by Controlling Transpiration Loss via Wind
Effects of Ocean Water as an Irrigation Supplement on the Growth of Rice Seedlings
How Does Music Affect Plant Growth
Maintaining Correct Balance
Effects of Diet on Blood Glucose
Ammonia: The Passed Gas
Do the Right and Left Ears Hear Notes Differently
Got Stamina?
Measuring Human Horsepower
Factors Affecting Nodule Formation in Legumes
What Do Plants Need Most
Compost or Fertilizer
Effect of Sugar on Bean Plant Growth
Does the Colour of Light Affect Plant Growth
Is Spinach Made in the Shade
The Speed of Sprouting Seeds
Ethyl Alcohol vs. E. coli
Effects of Reading and Working on the Computer on Vision
Blowing Off Carbon Dioxide
Suck It Up
Phytoremediation of Zinc
Comparison of the Effectiveness of Organic Worm Castings
Is It All Downhill from Here
Sunless Sunflowers
Does Greater Leaf Diameter Increase Transpiration Rate of Rose Geranium
Physiology of Plants in a Simulated Martian Atmosphere
Death in a Water Bath
Nail-Patella Syndrome Phenotype Expression
Effect of Pupil Dilation on Peripheral Vision
Are Fingerprints Hereditary
Effect of the Timing of the Application of Potassium on Antirrhinum
Determining the Effects of Water Temperature and Exposure Terms on Seed Germination
Effect of Color on Cherry Trees
Hydroponics and Aeroponics
Now You See It, Now You Don't
Effect of Exercise on Blood Pressure and Pulse Rate
Effects of Various Aromas on Animal Behaviour
Effect of Ingested Fluid Temperature on Basal Body Temperature in Humans
Family Fingerprints
To Chew or Not to Chew
Does Blood Pressure Affect Heart Rate
Retinal Glare Recovery
Whose Mouth Is Cleaner
How Fibonacci Is Your Face
Get a Head Start II
Doggy Vision
Does Oregano Oil Have an Antibiotic Effect
Do Different Diets in Ruminant Animals Affect the Microorganism Colony Growth
Does Beta Carotene Prevent Tumour Growth in Plants
Growth Rate of Poa pratensis in Pure Humus
Diabetes and Exercise
The Power of Rat Senses
Making of a Potpourri Fertiliser
Which Colour is Dominant in Mice
Does Varying Feed Affect the Milk of Lactating Caprines
Are Mice Territorial
Bioartificial Engineered Heart Tissue
Effects on the Flow Rate as a Representation of Stroke Volume
Do You Hear What I Hear
Blood Pressure

Also Read: 100+ CBSE Class 12 Chemistry Investigatory Project Topics 2026

CBSE Class 12 Biology Project Format 2026

There are various formats on various boards that students can choose and follow for making their projects. Yet, in the CBSE board, there is a specific format for projects for CBSE class 12 projects that must be followed by the students. Candidates can go through the CBSE class 12 project format given below.