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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Read the Evolution notesFree MDCAT chapter notes with key terms814 questions · page 8 of 41
- A. Herbivores
- B. Consumer
- C. Carnivores
- D. Omnivores
Explanation: Herbivores are animals adapted to feed mainly on plants, such as grasses, leaves or fruits.
Correct answer: Herbivores- A. Science
- B. Atom
- C. Molecule
- D. Element
Explanation: Science is the systematic study of the natural world through observation, testing and evidence, so it includes the study of nature.
Correct answer: Science- A. Species
- B. Genus
- C. Family
- D. Order
Explanation: A species is the basic unit of biological classification and generally consists of organisms that can interbreed and produce fertile…
Correct answer: Species- A. Germany
- B. Turkey
- C. Italy
- D. Japan
Explanation: The term biology was introduced in Germany around 1800, with its early use associated with German scholar Gottfried Reinhold Treviranus…
Correct answer: Germany- A. Algebra
- B. Statistics
- C. Matrix
- D. Geometry
Explanation: Biometry applies statistical methods to biological measurements, such as variation in body size, inheritance, and population data.
Correct answer: Statistics- A. Natural selection
- B. The theory of recapitulation
- C. Inheritance of acquired characters
- D. Over production
Explanation: Lamarck proposed that organisms acquire adaptations through use and disuse and pass those acquired characters to their offspring.
Correct answer: Inheritance of acquired characters- A. Mutation takes place
- B. Migration takes place
- C. Random mating takes place
- D. Natural selection takes place
Explanation: The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain constant from generation to…
Correct answer: Random mating takes place- A. Size is very small
- B. Gene pool is diverse
- C. Rate of reproduction is high
- D. Species are protected and conserved
Explanation: The correct answer is that genetic drift is most likely to occur when the population size is very small.
Correct answer: Size is very small- A. Deletion
- B. Inversion
- C. Substitution
- D. Transposition
Explanation: The mutation is a Substitution because one or more nucleotides have been replaced by a different nucleotide as shown in figure.If we…
Correct answer: Substitution- A. 2%
- B. 15%
- C. 31%
- D. 36%
Explanation: The percentage of heterozygous individuals in the given population is:=2pq=2(0.19)(0.81)=0.307/100=30.7%→31%.So option C is correct.All…
Correct answer: 31%- A. Wings of insects and birds, homologous, convergent evolution
- B. Wings of bats and arms of monkeys, homologous, divergent evolution
- C. Wings of bats and arms of monkeys, analogous, convergent evolution
- D. Wings of insects and birds, analogous, divergent evolution
Explanation: The correct answer is Option B. Homologous structures, like the wings of bats and arms of monkeys, arise from a common ancestor and…
Correct answer: Wings of bats and arms of monkeys, homologous, divergent evolution- A. Learned behavior
- B. Territoriality
- C. Courtship behavior
- D. Innate behavior
Explanation: Innate behaviors are instinctive and present in an organism from birth.
Correct answer: Innate behavior- A. 0.36
- B. 0.4
- C. 0.48
- D. 0.6
Explanation: In Hardy-Weinberg equilibrium, the frequency of the recessive allele (q2) can be calculated as 0.16 (since 16% show the recessive trait).
Correct answer: 0.6- A. sympatric speciation
- B. allopatric speciation
- C. parapatric speciation
- D. natural selection
Explanation: The origin of new species through reproductive isolation and evolutionary divergence in populations sharing the same habitat is called…
Correct answer: natural selection- A. Mutation
- B. Random mating
- C. Selection
- D. Gene flow
Explanation: The Hardy-Weinberg equilibrium can be disturbed by a number of forces, including mutations, natural selection, nonrandom mating, genetic…
Correct answer: Random mating- A. Global warming
- B. Glaciations
- C. Volcanic activity
- D. Oxygenation of the atmosphere
Explanation: The production and release of oxygen, by cyanobacteria and algae, lead to evolution of eukaryotic cells as they contain a membrane-bound…
Correct answer: Oxygenation of the atmosphere- A. Phylogenesis
- B. Neoteny
- C. Parthenogenesis
- D. Ontogenesis
Explanation: Neoteny is also called pedogenesis. It is a slowing of the rate of development with the consequent retention, in adulthood, of a feature…
Correct answer: Neoteny- A. Spontaneous generation
- B. Origin of life from blue-green algae
- C. Origin of life is due to pre-existing organisms
- D. Organic evolution is due to chemical reactions
Explanation: The abiogenesis theory of origin states that life originated from non-living things in a spontaneous manner.
Correct answer: Spontaneous generation159. The process that has transformed the life on earth from its earliest forms to vast diversity is
- A. Mutation
- B. Evolution
- C. Migration
- D. Genetic drift
Explanation: Option B is correct since evolution is the process that is stated in the words of the question.
Correct answer: Evolution- A. Iron
- B. Zircon
- C. Diamond
- D. Cadmium
Explanation: Option B is correct since zircon is the oldest mineral discovered. It is a fact.
Correct answer: Zircon