Evolution Practice Questions
NECO (Nigeria) · NECO Biology · 150 free MCQs with instant results and detailed explanations.
150
Total
47
Easy
72
Medium
31
Hard
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Sample Questions from Evolution
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Q1
Easy
Which of the following best describes natural selection?
A.
Survival of the fittest based on advantageous traits.
B.
Random mutation of genes without influence on survival.
C.
Equal survival rates for all individuals in a population.
D.
Deliberate breeding of organisms for desired traits.
Show Answer & Explanation
Correct Answer: A
Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring. This concept is often summarized as 'survival of the fittest'.
Q2
Easy
Which evidence supports the theory of evolution through common ancestry?
A.
Similarities in DNA sequences among species.
B.
Identical physical features in unrelated species.
C.
Species adapting to different environments without common ancestry.
D.
Species that have not changed over millions of years.
Show Answer & Explanation
Correct Answer: A
Similarities in DNA sequences among different species indicate a common ancestry, as it suggests that they share genetic material due to evolution from a common ancestor.
Q3
Easy
What is the role of mutations in evolution?
A.
They are always harmful to the organism.
B.
They provide variations that can lead to adaptive traits.
C.
They have no impact on evolution.
D.
They only occur in artificial selection scenarios.
Show Answer & Explanation
Correct Answer: B
Mutations introduce genetic variations in a population, which can lead to adaptive traits that enhance survival and reproductive success in changing environments.
Q4
Medium
Which of the following is the primary mechanism of evolution proposed by Charles Darwin?
A.
Natural Selection
B.
Genetic Drift
C.
Mutation
D.
Migration
Show Answer & Explanation
Correct Answer: A
Natural Selection is the process proposed by Charles Darwin where organisms better adapted to their environment tend to survive and produce more offspring. This is fundamental to the theory of evolution.
Q5
Medium
The concept of 'survival of the fittest' primarily refers to which of the following?
A.
The strongest organisms survive.
B.
The most adaptable organisms survive.
C.
The largest organisms survive.
D.
The fastest organisms survive.
Show Answer & Explanation
Correct Answer: B
'Survival of the fittest' means that the organisms that are most adaptable to their environment are more likely to survive and reproduce, not necessarily the physically strongest or fastest.
Q6
Medium
Which type of evidence for evolution involves studying the similarities in embryonic development among different species?
A.
Fossil evidence
B.
Comparative anatomy
C.
Comparative embryology
D.
Molecular biology
Show Answer & Explanation
Correct Answer: C
Comparative embryology examines the similarities in the embryonic stages of different species, which provides insight into their evolutionary relationships.
Q7
Medium
Which of the following is an example of divergent evolution?
A.
The development of antibiotic resistance in bacteria.
B.
The adaptation of different species of finches on the Galapagos Islands.
C.
The similar appearance of sharks and dolphins.
D.
The evolution of the horse from a small ancestor.
Show Answer & Explanation
Correct Answer: B
Divergent evolution occurs when two or more related species become more dissimilar over time, as seen in the different species of finches on the Galapagos Islands adapting to varied environments.
Q8
Hard
Which of the following statements best describes the process of speciation?
A.
Speciation occurs when a population becomes reproductively isolated and evolves different traits over time.
B.
Speciation is the result of random mutations in a population without any environmental influences.
C.
Speciation happens only when a significant number of individuals migrate to a new habitat.
D.
Speciation is the immediate result of genetic drift in a small, isolated population.
Show Answer & Explanation
Correct Answer: A
Option A is correct because speciation is defined as the evolutionary process by which populations evolve to become distinct species, often due to reproductive isolation leading to divergent evolution.
Q9
Hard
In a certain population of birds, feather color varies from blue to green. If a new predator favors birds with blue feathers, what is the most likely evolutionary outcome over several generations?
A.
The population will evolve to have more blue-feathered birds due to natural selection.
B.
The population will exhibit an equal distribution of blue and green feathers.
C.
The population will become predominantly green-feathered due to selective pressure.
D.
The feather color will become irrelevant to survival and will not change.
Show Answer & Explanation
Correct Answer: C
Option C is correct because the predator's preference for blue-feathered birds will lead to increased survival and reproductive success of the green-feathered birds, resulting in a shift in the population's feather color over generations.
Q10
Hard
Which of the following observations would most strongly support the theory of evolution by natural selection?
A.
A population of birds shows a range of beak sizes, and those with larger beaks are able to eat hard seeds more effectively.
B.
Fossils of the same species are found on different continents, suggesting they migrated.
C.
Some individuals in a population have a genetic mutation that makes them resistant to a disease.
D.
All members of a population are genetically identical and unable to adapt to environmental changes.
Show Answer & Explanation
Correct Answer: A
Option A illustrates how variation within a population can lead to differential survival and reproduction, which is the foundation of natural selection. Birds with larger beaks have a survival advantage in accessing food, demonstrating adaptation to their environment.
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Evolution — NECO (Nigeria) NECO Biology Practice Questions Online
This page contains 150 practice MCQs for the chapter Evolution in NECO (Nigeria) NECO Biology. The questions are organized by difficulty — 47 easy, 72 medium, 31 hard — so you can choose the right level for your preparation.
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