Find the CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved right below. We offer standard Class 12 Biology sample papers packed with detailed solutions for the 2026-27 term, following rules set by CBSE, NCERT, and KVS. Practice these model tests to build confidence and understand fresh marking trends.
Practice Model Papers for Class 12 Biology
Want to know which chapters carry high marks? Working through our Class 12 Biology model papers helps you learn chapter weightage and expected test difficulty. Solving these guess papers enables Class 12 students to find weak spots and practice better time management. We also recommend checking our previous years' Class 12 Biology Question Papers for extra practice.
Class 12 Biology Model Paper PDF Download
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
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Exam Preparation Sample Paper for Class 12 Biology CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved
How to download CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved in PDF?
Access and download the CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved effortlessly from our platform to gear up for your upcoming school assessments. To achieve top scores, Class 12 students must understand the structural design used by educators. We advise practicing these current Biology sample papers to tackle expected question types. Save files in a convenient PDF format for offline revision, and attempt them under strict home exam conditions for best results.
Benefits of Practicing Class 12 Biology Sample Papers
- Exclusive Questions: Explore novel practice items for Biology designed to challenge your understanding.
- Syllabus Mapping: Learn chapter priorities and question styles prevalent in current Class 12 guidelines.
- Performance Review: Analyze test results to isolate difficult areas in Class 12 Biology for remedial study.
- Speed Enhancement: Solving mixed format questions for Class 12 Biology guarantees improved speed and timely paper completion.
How to Analyze Your Performance in CBSE Class 12 Biology 2025 Sample Paper Set 04 Solved
- Review Solutions: Evaluate your completed papers using teacher-prepared keys inside the Biology Sample Paper PDF.
- Target Weaknesses: Class 12 students should analyze missed questions to rectify conceptual misunderstandings.
- Textbook Reference: Consult the NCERT book for Class 12 Biology when stuck, then practice the concept fresh.
- Ongoing Practice: Take additional Biology sample sets on our platform to ensure full readiness for CBSE tests.
FAQs
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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.
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