Class 12 · Biology · CBSE Board · 2016–2025

Evolution — Class 12 Biology PYQs

78 questions from this chapter, asked in 8 Class 12 exams between 2016–2025 — every question paper set included, duplicates removed.

78questions

8Class 12 exams

2016–2025years covered

1 / 2 / 3 / 5mark values asked

Questions asked per year

202518 Qs 20249 Qs 20238 Qs 202015 Qs 20199 Qs 201815 Qs 20176 Qs 20164 Qs

Practice questions first 10 of 78 — free

Q1MCQ20251 mark

Answer Logic

When genes are shuffled due to sexual reproduction which leads to variation in a population, it is called :
[Max Marks: 1 | Set: 57/2/3]

(A)Recombination

(B)Genetic drift

(C)Mutation

(D)Natural selection

Q2MCQ20251 mark

Answer Logic

Identify the vestigial part in humans from the following :
[Max Marks: 1 | Sets: 57/2/2]

(A)Tail

(B)Neck

(C)Patella

(D)Humerus

Q3MCQ20251 mark

Answer Logic

What does 'p' represent in the Hardy-Weinberg equation for a gene with two alleles ?
[Max Marks: 1 | Sets: 57/1/3]

(A)Frequency of heterozygous individuals

(B)Frequency of homozygous recessive individuals

(C)Frequency of dominant allele

(D)Total population

Q4MCQ20251 mark

Answer Logic

The age of fossils can be estimated by :
[Max Marks: 1 | Sets: 57/2/1]

(A)Observing their size

(B)Analysing their weight

(C)Determining the ratio of isotopes

(D)Studying their shape

Q5MCQ20251 mark

Answer Logic

Which one of the following is correctly matched ?
[Max Marks: 1 | Sets: 57/1/2]

(A)Analogous structures – Flippers of penguin and dolphin

(B)Homologous structures – Wings of butterfly and bat

(C)Vestigial organs – Nictitating membrane and blind spot in human eye

(D)Atavistic organs – Vermiform appendix in humans

Q6MCQ20251 mark

Answer Logic

Which one of the following is considered as a living fossil ?
[Max Marks: 1 | Sets: 57/2/3]

(A)Archaeopteryx

(B)King Crab

(C)Cockroach

(D)Coelacanth

Q7MCQ20251 mark

Answer Logic

What percentage of genetic variation exists between two unrelated humans on average ?
[Max Marks: 1 | Sets: 57/2/1]

(A)5.0%

(B)0.5%

(C)50%

(D)15%

Q8MCQ20251 mark

Answer Logic

Read the given statements and choose the correct option.
Statement-I : According to Darwin, the number of individuals of any species has remained more or less constant over a period of time.
Statement-II : According to Darwin, individuals within species show a great deal of variation and there is no intra-specific competition.
[Max Marks: 1 | Sets: 57/1/1]

(A)Statement-I is true and Statement-II is false

(B)Statement-I is false and Statement-II is true

(C)Both statements are true

(D)Both statements are false

Q9MCQ20251 mark

Answer Logic

Which one of the following is an example of homology ?
[Max Marks: 1 | Sets: 57/1/2]

(A)Wings of butterfly and bird

(B)Wings of bat and bird

(C)Flippers of dolphin and penguin

(D)Gills of prawn and lungs of man

Q10MCQ20251 mark

Answer Logic

Which one of the following pairs correctly matches a typical feature with the epoch of evolution ?
[Max Marks: 1 | Sets: 57/1/3]

(A)Origin of life – Paleozoic era

(B)Mammals diversified – Mesozoic era

(C)Jawless fish – Paleozoic era

(D)Dinosaurs ruled – Cenozoic era

Why practise Evolution PYQs?

Evolution has appeared in 8 Class 12 Biology exams we track between 2016–2025, with questions worth 1, 2, 3, 5 marks. CBSE Board examiners consistently reuse concepts and question patterns from this topic — practising its previous year questions is the most reliable way to know exactly what to expect in your exam.

Evolution — Class 12 Biology PYQs

Questions asked per year

Practice questions first 10 of 78 — free

Why practise Evolution PYQs?

Other Biology chapters

Sexual Reproduction in Flowering Plants

Human Reproduction

Reproductive Health

Principles of Inheritance and Variation

Molecular Basis of Inheritance

Human Health and Diseases

Microbes in Human Welfare

Biotechnology – Principles and Processes

Biotechnology and its Applications

Organisms and Populations

Ecosystem

Biodiversity and its Conservation