Read and download PDF of CBSE Class 12 Biology 2025 Sample Paper Solved Set 5 designed as per the latest curriculum and examination pattern for Class 12 issued by CBSE, NCERT and KVS. The latest Class 12 Biology Sample Papers have been provided with solutions so that the students can solve these practice papers and then compare their answers. This will help them to identify mistakes and improvement areas in Biology Class 12 which they need to study more to get better marks in Class 12 exams. After solving these guess papers also refer to solved Class 12 Biology Question Papers available on our website to build strong understanding of the subject
Sample Paper for Class 12 Biology Pdf
Students can refer to the below Class 12 Biology Sample Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Biology 2025 Sample Paper Solved Set 5
Biology Class 12 Sample Paper
Section – A
Q. No. 1 to 12 are multiple choice questions. Only one of the choices is correct. Select and writethe correct choice as well as the answer to these questions.
1 Polydactyly (six-fingered hands) is a genetic condition due to a dominant allele (P) over recessive allele (p). If a six- fingered woman and a fivefingered man have a normal child, the genotype of the parents and the child would be:
| Mother | Father | Child | |
| (a) | PP | PP | Pp |
| (b) | Pp | PP | PP |
| (c) | Pp | Pp | PP |
| (d) | PP | Pp | Pp |
Answer : d
2 The microbes used in kitchen are
a) Lactobacillus and yeast
b) Penicillium and yeast
c) Microspora and E.coli
d) Rhizopus and Lactobacillus
Answer : d
3 Which of the following phenomena significantly contributes to speciation?
(P) Natural selection
(Q) Genetic drift
(R) Gene flow
(S) Geographic Isolation
(T) Stabilising Selection
a) Only P,Q and S
b) Only Q and S
c) Only R and T
d) Only Q,R and T
Answer : a
4 A male having abnormal arrangement of chromosome is sterile. He also shows feminine development due to unnatural presence of a Xchromosome.
Mention the chromosomal disorder from which he suffers.
a) Turner’s syndrome
b) Down’s syndrome
c) Haemophilia
d) Klienfelter’s syndrome
Answer : d
5 The hilum in a typical angiospermic ovule represents the junction between
a) Integuments and the embroyo sac
b) Embroyo sac and the nucellus
c) Body of the ovule and the funicle
d) Nucellus and the funicle
Answer : c
6 Given below is a sequence of bases in mRNA of a bacterial cell. Identify the amino acid that would be interpreted at codon position 3 and codon position 5, during the process of its translation.
3’ AUC AGG UUU GUG AUG GUA GGA 5’
a) Phenylalanine, Methionine
b) Cystein, Glycine
c) Alanine, Proline
d) Serine, Valine
Answer : a
7 The organism used in the construction of the first artificial recombinant DNA by Cohen and Boyer in 1972 was
a) E.Coli
b) Salmonella typhimurium
c) Agrobacterium tumefaciens
d) Bacillus thuringiensis
Answer : b
8 What is the smallest part of a DNA molecule that can be changed by a point mutation?
a) Oligonucleotide
b) Codon
c) Gene
d) Nucleotide
Answer : d
9 The amino acid attaches to the tRNA at its
a) 5’ end
b) 3’ end
c) Anticodon site
d) DHU loop
Answer : b
Please click the link below to download pdf file of CBSE Class 12 Biology 2025 Sample Paper Solved Set 5
| CBSE Class 12 Biology Boards 2020 Sample Paper Solved |
| CBSE Class 12 Biology Sample Paper 2020 Solved Set A |
| CBSE Class 12 Biology Sample Paper 2020 Solved Set B |
| CBSE Class 12 Biology Sample Paper 2019 Solved |
| CBSE Class 12 Biology Sample Paper 2019 Solved Set A |
| CBSE Class 12 Biology Sample Papers 2011 Set A |
| CBSE Class 12 Biology Sample Papers 2011 Set B |
| CBSE Class 12 Biology Sample Papers 2011 Set C |
| CBSE Class 12 Biology Sample Papers 2011 Set D |
| CBSE Class 12 Biology Sample Paper 2010 Set A |
| CBSE Class 12 Biology Sample Paper 2010 Set B |
| CBSE Class 12 Biology Sample Paper 2010 Solved Set C |
| CBSE Class 12 Biology Sample Paper 2010 Solved Set D |
| CBSE Class 12 Biology Blue print |
| CBSE Class 12 Biology Sample Paper Set A |
CBSE Class 12 Biology 2025 Sample Paper Solved Set 5
We hope you liked the above provided CBSE Class 12 Biology 2025 Sample Paper Solved Set 5. To get an understanding of the type of questions which were asked in exams, it is important for Class 12 students to understand the way sample Paper are set by teachers. Students can download the Sample Paper for Class 12 Biology which will be coming in the exams so that you can practise them and solve all types of questions that can be asked in exams. By doing CBSE Class 12 Biology 2025 Sample Paper Solved Set 5 you will understand the regular questions and MCQ questions for Class 12 Biology which are always asked. You can download CBSE Class 12 Biology Sample Paper and Class 12 Biology Question Papers in PDF. You should attempt all the last year question paper for Class 12 and Class 12 Biology MCQ Test in examination conditions at home and then compare their answers with the solutions provided by our teachers.
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