NSEB Evolution Question, Download Free Question PDF

Evolution forms an important part of NSEB Biology because it connects multiple concepts like adaptation, survival, variation, and the origin of species. Many questions in the examination are designed to test how well students can apply biological concepts in practical situations. Topics related to fossils, natural selection, homologous organs, and evolutionary evidence are commonly included in biology olympiad-level preparation.

The NSEB Evolution Question section often includes assertion-reason questions, match-the-column questions, and concept-based MCQs. Students should carefully analyze every option and understand the scientific explanation behind the correct answer. Regular question practice helps improve conceptual understanding and problem-solving ability.

NSEB Evolution Previous Year Questions PDF

Previous year questions help students understand the pattern and difficulty level of evolution questions asked in NSEB. Regular practice also improves logical thinking, concept application, and accuracy in assertion-reason and MCQ-based questions. 

NSEB Evolution Problems with Solutions PDF

Why Evolution is Important for NSEB

Evolution is a high-weightage chapter in biology olympiad examinations. Many questions are based on scientific reasoning, adaptation, and evolutionary relationships between organisms.

Important topics include:

• Darwin’s theory

• Natural selection

• Fossil evidence

• Homologous organs

• Adaptive radiation

• Origin of life

• Industrial melanism

• Embryological evidence

Practicing every NSEB Evolution Question carefully can help students improve conceptual clarity.

NSEB Evolution Questions

The following questions are important for understanding major evolution concepts asked in NSEB examinations. Students should solve these questions carefully and revise the explanations to strengthen conceptual clarity.

Question 1: Darwin conjectured that all the varieties of finches on Galapagos islands came from a common ancestor. This ancestor mostly was

(A) Insectivorous
(B) Meat eating
(C) Frugivorous
(D) Seed-eating

Answer: (D)

Question 2: ‘Embryos never pass through the adult stages of other animals.’

This statement was given by Karl Ernst von Baer. He gave this above statement in disapproval of whose evidence for evolution?

(A) Ernst Heckel
(B) Charles Darwin
(C) Hugo de Vries
(D) Lamarck

Answer: (A)

Question 3: Study the relationship between A and B, and answer D correctly by selecting the correct option.

Thorns of Bougainvillea (A) : Tendrils of Cucurbita (B) :: Bones of forelimbs of Balaenoptera (C) : (D).

(A) Bones of hindlimbs of Panthera
(B) Bones of forelimbs of Vipera
(C) Bones of forelimbs of Pteropus
(D) Bones of hindlimbs of Macropus

Answer: (C)

Question 4: Which individual among the following displays the highest reproductive fitness?

(A) A man with asthma producing two healthy non-asthmatic offsprings
(B) A diabetic man producing four offsprings with diabetes
(C) A healthy man producing one healthy offspring
(D) A healthy man producing two diseased and one healthy offsprings

Answer: (B)

Question 5: Panspermia theory states that

(A) Life was created by a supernatural entity
(B) Life from some other celestial body was transferred to earth
(C) Life came from decaying and rotting matter
(D) Life came from chemicals

Answer: (B)

Question 6: Assertion (A): A heavily polluted area has a larger population of melanised moths than white-winged moths.

Reason (R): Lichen, which is a symbiotic association between fungi and algae grow in places where the air is polluted.

(A) (A) is false but (R) is true
(B) Both (A) and (R) are true and (R) is the correct explanation of (A)
(C) Both (A) and (R) are true but (R) is not the correct explanation of (A)
(D) (A) is true but (R) is false

Answer: (D)

Question 7: Match the Column-I and Column-II and select the correct option.

(A) a-(ii); b, c, d,e-(i)
(B) a, c, e-(ii); b, d-(i)
(C) c, d, a-(i); b, e-(ii)
(D) a, b-(i); c, d, e-(ii)

Answer: (A)

Question 8: In the context of evolution, certain forest has almost no grass or shrubs. Trees with foliage at a higher level are the primary producers in this forest.

Species-A: Herbivores with short legs and short necks.
Species-B: Herbivores with long legs and long necks.
Species-C: Herbivores with burrowing adaptation.

Select the species which would thrive in this setting from the given species A, B and C.

(A) Species C is the most fit for this forest
(B) Species A and C both are fit for this forest
(C) Species B is the most fit for this forest
(D) Species B is the most unfit for this forest

Answer: (C)

Question 9: During an archaeological excavation, fossil remains of Stegosaurus were found in layer B of the earth’s crust. Another fossil of a different animal was found in layer D, which was one of the layers below the layer B. This new fossil can belong to all of the following, except

(A) Early reptiles
(B) Fishes
(C) Modern birds
(D) Advanced amphibians

Answer: (C)

Question 10: S. L. Miller simulated the conditions of primitive earth in a closed flask to observe the authenticity of chemical evolution for the origin of life on earth. Which of the following describes the correct contents in the closed flask?

(A) Only methane, ammonium, hydrogen at 800°C
(B) Methane, ammonium, oxygen and steam at 800°C
(C) Only ammonia, hydrogen, water vapour at 900°C
(D) Hydrogen, methane, ammonia and water vapour at 800°C

Answer: (D)

Evolution is one of the most important chapters for NSEB Biology preparation. Questions from natural selection, fossils, adaptation, and origin of life are commonly asked in the examination. Students should regularly practice every NSEB Evolution Question to strengthen conceptual clarity and improve exam accuracy.

With proper revision, NCERT reading, and regular MCQ practice, students can perform better in NSEB Biology examinations.