Download CBSE Class 12 Biology Sample Papers
Access comprehensive sample question papers for Class 12 Biology using the CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved. Designed to align with the 2026-27 CBSE academic guidelines, these model papers help students assess their exam readiness and understand current marking schemes.
Access CBSE Sample Papers and Solutions
Navigate directly to the solved Biology model papers using the digital viewer below. Each practice set includes detailed solutions, allowing students to instantly cross-check their work and identify areas requiring further revision.
SECTION: A
1. Lactational amenorrhea as a means of contraception best refers to:
(a) Reduced deficiency of pregnancy hormone
(b) Absence of menstruation since ovulation does not occur during breastfeeding
(c) Unsuitable uterus
(d) Suppressed sperm motility
Answer : b
2. Given below are some chromosomal abnormalities and the chromosomal complement. Select the correct match:
| Chromosomal abnormality | Chromosome complement |
| A Down’s Syndrome | 1 44+XXY |
| B Klinefelter’s Syndrome | 2 TRISOMY OF 21 |
| C Colour Blidness | 3 44+ OX |
| D Turner’s Syndrome | 4 sex-linked recessive disorder |
A B C D
(a) 1 2 3 4
(b) 3 4 1 2
(c) 2 1 4 3
(d) 4 3 2 1
Answer : c
3. Mendel Crossed tall and dwarf plants. in F2 generation the observed the ratio was 3:1 for tall and short plants. from this result, he reduced
(a) law of dominance
(b) law of independent assortment
(c) law of segregation
(d) law of incomplete dominance
Answer : a
4. The presence of both a leading and lagging strand is observed during DNA replication. This is because:
(a) RNA primers are not sufficient to facilitate replication of both strands
(b) Only one DNA template is available for reading at a time
(c) DNA polymerase can catalyse synthesis of one strained at a time
(d) DNA polymerase read only in 5 '-->3' direction
Answer : d
Please click the link below to download pdf file of CBSE Class 12 Biology 2025 Sample Paper Solved Set 4
Free study material for Biology
Exam Preparation Sample Paper for Class 12 Biology CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved
Class 12 Biology CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved PDF Download Guide
Access structured sample papers for Class 12 Biology. Solving the CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved provided above helps students understand official exam blueprints and tackle anticipated question formats with confidence.
Key Advantages of Solving CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved
- Original Practice Material: Access unique questions for Biology designed to challenge your understanding.
- Self-Assessment: Evaluate scores per set to pinpoint weak zones in Class 12 Biology.
- Exam Completion Skills: Routine problem sets train you to manage test duration efficiently without stress.
How to Analyze Your Performance in CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved
- Self-Evaluation: Score your answers using official guidance to track your academic progress.
- Mistake Correction: Class 12 pupils must re-solve questions answered incorrectly to master the correct method.
- Continuous Practice: Take additional Biology sample modules online to maximize preparedness for CBSE evaluations.
FAQs
You can download the complete PDF for CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved for free from StudiesToday.com. Our resources for Class 12 Biology are updated for the latest academic session and follow the official exam pattern.
Yes, CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Biology to help students of Class 12 understand correct methodology and marking scheme.
Practicing this Biology paper helps in time management and identifying important topics. For Class 12, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.
Yes, all our study materials for Class 12 Biology are provided in a mobile-friendly PDF format. You can easily download CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved on your mobile device.