CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved

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Official CBSE Exam Papers for Class 12 Biology

Review targeted exam resources with the CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved. Built according to official CBSE standards for the 2026-27 academic year, these downloadable Class 12 Biology question papers support effective revision and performance tracking.

Solved Previous Year Papers for Biology

View or download the dedicated CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved resource below. Engaging with these previous year papers under timed conditions ensures continuous academic progress and mastery of the 2026-27 exam format.

SECTION A
Note : Choose the correct option from the choices given in each of the following questions.
 
1. Cleistogamous flowers are self-pollinated because
 
(A) they are bisexual flowers which do not open at all.
 
(B) they are bisexual and open flowers.
 
(C) they are unisexual.
 
(D) their stigma matures before the anthers dehisce.
OR
Asexual reproduction by zoospores is observed in
 
(A) Penicillium
 
(B) Hydra
 
(C) Sponge
 
(D) Chlamydomonas
 
2. The theory of evolution supported by the experiment conducted by Louis Pasteur is
 
(A) Spontaneous generation theory
 
(B) Life comes only from pre-existing life
 
(C) Abiogenesis of life
 
(D) Big bang theory
 
3. The diagnostic test that confirms typhoid in humans is
 
(A) ELISA
 
(B) Widal
 
(C) MRI
 
(D) Amniocentesis
 
4. The bioactive molecule used as an immunosuppressive agent during organ transplant is
 
(A) Tetracyclin
 
(B) Cyclosporin-A
 
(C) Statin
 
(D) Streptomycin
OR
‘Blue revolution’ refers to 
 
(A) construction of water dams for conservation of water
 
(B) production of fish in large quantities
 
(C) sewage treatment
 
(D) controlling algal bloom
 
5. Which one of the following is not the product of transgenic experiments ?
 
(A) Pest-resistant crop variety
 
(B) High nutritional value in grains
 
(C) Production of insulin by rDNA technique
 
(D) Drought-resistant crops
Please click on below link to download CBSE Class 12 Biology Boards 2020 Question Paper Solved Set B.

Free study material for Biology

Download CBSE Question Papers: Class 12 Biology

Previous Year Question Papers: Class 12 Biology

Access structured past examination sets for Class 12 Biology. Solving the CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved provided above helps students understand actual exam difficulty levels, question formats, and topic distributions for both descriptive and objective sections.

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FAQs

Where can I download the official PDF for CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved?

The CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved is available for download on StudiesToday.com. It includes complete set with all sections so that Class 12 students can practice with the exact same paper that came in the CBSE exams.

Are the solutions for CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved are prepared by subject matter experts as per official marking scheme. Class 12 students will understand the structure of answers and 'step-marks' methodology Biology.

How does solving CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved is important to understand repeat themes and question difficulty levels of Biology. It helps Class 12 students to test their time management skills too.

Can I access CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved in different languages?

Yes, where applicable, CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved is available in both English and Hindi mediums. All students from Class 12 can access Biology study material in their preferred language.

Is there a charge to download the CBSE Class 12 Biology solved papers?

No, all previous year question papers on StudiesToday, including CBSE Class 12 Biology Boards 2020 Question Paper Set 02 Solved, are provided free of charge in mobile-friendly PDF.