StudentAidUnit 24: Evolution — Mcqs
12th Class Biology · Unit 24: Evolution
0 of 0 answered
0 correct
MCQ1.Who developed a theory of natural selection essentially identical to Darwin's?
MCQ2.Which statement is incorrect? (a) Homologous organs are functionally different but structurally alike. (b) Analogous organs are functionally different but structurally alike. (c) Examples of analogous structures are arms of a man, forelimb of a cat, flipper of a whale. (d) Examples of homologous structures are wings of bats, birds and insects.
- a Homologous organs are functionally different but structurally alike
- b Analogous organs are functionally different but structurally alike
- c Examples of analogous structures are arms of a man, forelimb of a cat, flipper of a whale
- d Examples of homologous structures are wings of bats, birds and insects
MCQ3.Which of the following is an example of homologous organs? (a) Wings of bird and insect. (b) Forelimbs of human and whale. (c) Fin of fish and wing of bird. (d) Eye of octopus and human.
MCQ4.According to the theory of natural selection, variations arise due to; (a) Mutations (b) Use and disuse of organs (c) Selective breeding (d) Splitting of population
- a Mutations
- b Use and disuse of organs
- c Selective breeding
- d Splitting of population
MCQ5.Which condition is NOT required for Hardy-Weinberg equilibrium? (a) Random mating (b) No mutation (c) Natural selection (d) Large population size
MCQ6.Genetic drift is the change in gene frequency due to; (a) Chance events (b) Natural selection (c) Emigration of individuals (d) Immigration of individuals
- a Chance events
- b Natural selection
- c Emigration of individuals
- d Immigration of individuals
MCQ7.Which of the following ideas is common to both Lamarckism and Darwinism? (a) Mutations are the source of genetic variations (b) Adaptations enable individuals to cope with environmental challenges (c) Use and disuse of organs results in the development of acquired characters (d) Acquired characters are inherited to next generations
MCQ8.If a massive fire kills 90% of a population and survivors remain by luck. Such a change in allelic frequency will be called; (a) Natural Selection (b) Genetic Drift (c) Gene Flow (d) Mutation
MCQ9.Changes in gene frequency due to migration of individuals are called; (a) Genetic drift (b) Mutation (c) Gene flow (d) Genetic recombination
MCQ10.What may be the best evidence for the endosymbiotic evolution of eukaryotes? (a) Presence of a nucleus in eukaryotes (b) Circular DNA and 70S ribosomes in mitochondria (c) Single-layered membranes around mitochondria (d) Large volume of eukaryotic cells
- a Presence of a nucleus in eukaryotes
- b Circular DNA and 70S ribosomes in mitochondria
- c Single-layered membranes around mitochondria
- d Large volume of eukaryotic cells