Free Evolution MCQs with Answers
814 Evolution MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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- A. Parallel
- B. Divergent
- C. Convergent
- D. Adaptive
Explanation: Homologous structures demonstrate evidence of divergent evolution. These structures originate from a common ancestor but have evolved to…
Correct answer: Divergent- A. Phyletic lineage
- B. Mutation
- C. Evolution
- D. Biodiversity
Explanation: 'Descent with modification' is a fundamental concept in Darwin's theory of evolution.
Correct answer: Evolution- A. Rudimentary organs
- B. Analogous organs
- C. Homologous organs
- D. Vestigial organs
Explanation: The correct answer is that the forelimbs of humans, cats' paws, and the front flippers of whales are examples of homologous organs.
Correct answer: Homologous organs- A. Molecular biology
- B. Biogeography
- C. Paleontology
- D. Biochemistry
Explanation: Paleontology is the study of fossils, which serve as a visual record illustrating the evolution of organisms over time.
Correct answer: Paleontology- A. Fauna of South America
- B. Flora of South America
- C. Fauna and flora of South America
- D. Fauna and flora of North America
Explanation: During his journey on the HMS Beagle, Charles Darwin meticulously observed and gathered a diverse collection of specimens, including both…
Correct answer: Fauna and flora of South America- A. Reptilian, Amphibian
- B. Reptilian, Avian
- C. Fish, Avian
- D. Mammalian, Avian
Explanation: Archaeopteryx is a critical fossil that provides evidence for evolution by illustrating the link between reptiles and birds.
Correct answer: Reptilian, Avian- A. Genotype
- B. Genome
- C. Gene pool
- D. Phenotype
Explanation: The term "gene pool" refers to the total collection of all genes and their different alleles present in a population.
Correct answer: Gene pool- A. Paleontology
- B. Genetics
- C. Evolution
- D. Taxonomy
Explanation: Paleontology uses fossils to study the history of life on Earth.
Correct answer: Paleontology- A. Essay on Population by Malthus
- B. Lamarck's theory
- C. L-Miller's evidence for origin of life
- D. Mendel's paper on inheritance
Explanation: Charles Darwin was greatly influenced by Thomas Robert Malthus's 'An Essay on the Principle of Population.' Malthus's insights into how…
Correct answer: Essay on Population by Malthus- A. Insects' wings and bats' wings
- B. Forelimb of a mole and a bird's wings
- C. Forelimb of a man and a bat's wings
- D. Forelimb of man and horse
Explanation: Analogous organs are those that perform similar functions but have different evolutionary origins and structures.
Correct answer: Insects' wings and bats' wings- A. Analogy
- B. Homology
- C. Paleontology
- D. Genetics
Explanation: Homology refers to the similarity in structures or genes of different organisms due to shared ancestry.
Correct answer: Homology- A. How new species arise
- B. How adaptations develop over time
- C. The origin of life
- D. The genetics of evolution
Explanation: Darwin's theory, as presented in 'The Origin of Species,' primarily focuses on how new species develop.
Correct answer: How new species arise- A. Young and simple
- B. Old and complex
- C. Young and complex
- D. Old and simple
Explanation: The deepest strata of the Earth typically contain fossils that are 'old and simple.' This is explained by the Law of Superposition, which…
Correct answer: Old and simple- A. Catastrophism
- B. Recapitulation
- C. Membrane invagination hypothesis
- D. Endosymbiont hypothesis
Explanation: The correct answer is the endosymbiont hypothesis. This theory, proposed by Lynn Margulis, explains the origin of mitochondria and…
Correct answer: Endosymbiont hypothesis- A. Descent with modification
- B. Struggle for existence
- C. Survival of the fittest
- D. Mutation
Explanation: Darwin's theory of natural selection, as presented in 'On the Origin of Species,' focuses on concepts such as 'Descent with modification,'…
Correct answer: Mutation- A. Biogeography
- B. Fossil record
- C. Comparative anatomy
- D. Molecular biology
Explanation: The fossil record is a crucial piece of evidence for evolution, as it provides a chronological sequence of preserved remains or imprints…
Correct answer: Fossil record- A. South America
- B. North America
- C. Cape Verde
- D. Galapagos
Explanation: The correct answer is the Galapagos Islands. These islands are famous for their unique biodiversity, including many endemic species such…
Correct answer: Galapagos- A. Origin of discoveries and ideas
- B. Integration of discoveries and ideas
- C. Modification of discoveries and ideas
- D. Confirmation of discoveries and ideas
Explanation: The correct answer is the 'Integration of discoveries and ideas.' The 'Modern Synthesis,' or 'Neo-Darwinism,' is a term used to describe…
Correct answer: Integration of discoveries and ideas- A. Modern synthesis
- B. Modern Darwinism
- C. Neo-Darwinism
- D. Both A and C
Explanation: Mendelism and Darwinism were reconciled, and the genetic basis of variation and natural selection was worked out.
Correct answer: Both A and C- A. Variation, artificial selection
- B. Overpopulation, natural selection
- C. Variation, evolution
- D. Variation, natural selection
Explanation: The correct answer is variation and natural selection. The reconciliation of Mendelism and Darwinism in the context of population genetics…
Correct answer: Variation, natural selection