Official CBSE Exam Papers for Class 12 Biology
Review targeted exam resources with the CBSE Class 12 Biology Question Paper 2024 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
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SECTION A
Questions no. 1 to 16 are Multiple Choice Type Questions, carrying 1 mark each.
1. In which of the following plants are both male and female flowers born on the same plant and the mode of pollination can be geitonogamy or xenogamy ?
(A) Papaya
(B) Date Palm
(C) Maize
(D) Spinach
Answer : c
2. Which one of the following hormones is secreted by the human placenta that helps in the maintenance of pregnancy ?
(A) Relaxin
(B) Human Chorionic Gonadotropin
(C) Oxytocin
(D) Human Placental Lactogen
Answer : b
3. The periodic abstinence by a couple for family planning should be from :
(A) Day 5 to 10 of menstrual cycle
(B) Day 13 to 15 of menstrual cycle
(C) Day 10 to 17 of menstrual cycle
(D) Day 16 to 20 of menstrual cycle
Answer : c
4. Select the incorrect match from the following :
Human Karyotype Characters
(A) 45 + XX Broad palm with characteristic palm crease
(B) 44 + XXY Overall feminine development
(C) 44 + XO Sterile females as ovaries are rudimentary
(D) 44 + XY Normal male
Answer : b
5. You know that there are twenty different types of naturally occurring amino acids and four different types of bases in the DNA. A combination of 3 such bases code for a specific amino acid. If instead there are 96 different amino acids and 12 different bases in the DNA, then the minimum number of combination of bases required to form a codon is :
(A) 6
(B) 8
(C) 2
(D) 4
Answer : c
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Download CBSE Question Papers: Class 12 Biology
Download CBSE Class 12 Biology Question Paper 2024 Solved for Class 12 Biology
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FAQs
The CBSE Class 12 Biology Question Paper 2024 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.
Yes, the solutions for CBSE Class 12 Biology Question Paper 2024 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.
Solving previous year papers like CBSE Class 12 Biology Question Paper 2024 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.
Yes, where applicable, CBSE Class 12 Biology Question Paper 2024 Solved is available in both English and Hindi mediums. All students from Class 12 can access Biology study material in their preferred language.
No, all previous year question papers on StudiesToday, including CBSE Class 12 Biology Question Paper 2024 Solved, are provided free of charge in mobile-friendly PDF.