This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 7 Evolution – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is biological evolution? A) Is made up of all the fossils ever discovered on Earth. B) Is the preserved evidence of the activity of an organism. C) Are the remains or evidence of once-living organisms. D) Is the change over time in populations of related organisms. Show Answer Correct Answer: D) Is the change over time in populations of related organisms. 2. Recently, scientists have been able to use ..... to find common proteins and amino acids to determine how closely related species are. A) Homologous structures. B) Vestigial structures. C) DNA. D) Fossils. Show Answer Correct Answer: C) DNA. 3. Which of the following is the correct definition of natural selection? A) The idea that organisms less equipped for their environment tend to survive longer. B) The idea that organisms more well equipped for their environment tend to survive longer. C) The idea that organisms more well equipped for their environment tend to not survive. D) None. Show Answer Correct Answer: B) The idea that organisms more well equipped for their environment tend to survive longer. 4. Is a type of point mutation in DNA that involves the substitution of a purine (adenine or guanine) nucleotide with a pyrimidine (thymine or cytosine) nucleotide, or vice versa. In other words, a transversion mutation involves the exchange of a nitrogenous base of one chemical class for a nitrogenous base of the other chemical class. A) Transition mutation. B) Frame-shift mutation. C) Transversion mutation. D) Stop mutation. Show Answer Correct Answer: C) Transversion mutation. 5. The death of every member of a species. A) Extinction. B) Population. C) Evidence. D) Competition. Show Answer Correct Answer: A) Extinction. 6. A group of similar organisms that can mate with each other and produce offspring is called a A) Phylum. B) Kingdom. C) Species. D) Genus. Show Answer Correct Answer: C) Species. 7. Which of the following provides evidence for evolution by showing similarities in structures among different species, suggesting a common ancestor? A) Comparative anatomy. B) Molecular biology. C) Comparative embryology. D) Fossil record. Show Answer Correct Answer: A) Comparative anatomy. 8. Which of the following are not early invertebrates that existed during the Paleozoic era? A) Arachnid. B) Amphibians. C) Crustaceans. D) Trilobite. Show Answer Correct Answer: B) Amphibians. 9. P + q always equals 1. Which answer choice best explains this? A) Individual could have a dominant or a recessive allele. B) The population is in Hardy-Weinberg equilibrium. The 1 indicates that the population has not evolved. C) In terms of frequency, 1 is the highest possible number you can have. D) In terms of frequency, 1 is the same as 100%. All alleles in a population added up give you 100% of the alleles. Show Answer Correct Answer: D) In terms of frequency, 1 is the same as 100%. All alleles in a population added up give you 100% of the alleles. 10. Fossils that are created from minerals that replace the existing cell structure, creating a replica are A) Cast. B) Trace. C) Mold. D) Behavioral. Show Answer Correct Answer: A) Cast. 11. What is genetic drift? A) A change in allele frequencies due to random events. B) A change in allele frequencies due to natural selection. C) The transfer of alleles from one population to another. D) The formation of new species from existing species. Show Answer Correct Answer: A) A change in allele frequencies due to random events. 12. More than one consecutive footfall A) TRACKWAY-. B) UNDER TRACK. C) AMBER. D) TRACK INFILLS. Show Answer Correct Answer: A) TRACKWAY-. 13. Which part of the evolutionary theory did Charles Darwin develop after reading Thomas Malthus? A) Evolution is always advantageous. B) Variation increases an organisms chance of survival. C) Fitness to reproduce favors those organisms. D) Populations grow exponentially. Show Answer Correct Answer: C) Fitness to reproduce favors those organisms. 14. What is the significance of the Galapagos Islands in the study of evolution? A) They provided Charles Darwin with evidence of natural selection and adaptation. B) They are home to the largest number of species on Earth. C) They are the only place where evolution occurs. D) They have remained unchanged for millions of years. Show Answer Correct Answer: A) They provided Charles Darwin with evidence of natural selection and adaptation. 15. Which of the following is not involved in natural selection? A) Inheritable variation in populations. B) Competition for resources. C) Differences in reproductive success. D) Breeder selects traits. Show Answer Correct Answer: D) Breeder selects traits. 16. Darwin's expedition took how many years? A) 6. B) 3. C) 4. D) 5. Show Answer Correct Answer: D) 5. 17. Which is the correct order of appearance on Earth? A) Photosynthetic prokaryotes, eukaryotes, primordial soup, non-photosynthetic prokaryotes. B) Primordial soup, eukaryotes, photosynthetic prokaryotes, non-photosynthetic prokaryotes. C) Non-photosynthetic prokaryotes, photosynthetic prokaryotes, primordial soup, eukaryotes. D) Primordial soup, non-photosynthetic prokaryotes, photosynthetic prokaryotes, eukaryotes. Show Answer Correct Answer: D) Primordial soup, non-photosynthetic prokaryotes, photosynthetic prokaryotes, eukaryotes. 18. What evolutionary process leads to homologous structures appearing dissimilar? A) Convergent evolution. B) Artificial selection. C) Genetic drift. D) Divergent evolution. Show Answer Correct Answer: D) Divergent evolution. 19. For the transformation experiment we did, how did the bacteria get the new gene? A) By viral infection-transduction. B) By exposure to bacteria that have the genes-conjugation. C) By exposure to plasmids-transformation. D) None of the above. Show Answer Correct Answer: C) By exposure to plasmids-transformation. 20. The mutation theory for organic evolution is put forward by ..... A) Charls Darwin b) c) d). B) Erasmus Darwin. C) Mendel. D) De Vries. Show Answer Correct Answer: D) De Vries. 21. Which is artificial selection? A) Breeding dogs for specific traits. B) Coyote species diverging from the wolves. C) All the above. D) None of the above. Show Answer Correct Answer: A) Breeding dogs for specific traits. 22. What is an example of a vestigial structure in a human? A) Liver. B) Appendix. C) All the above. D) None of the above. Show Answer Correct Answer: B) Appendix. 23. Refers to the physical and behavioral traits that allow an organism to survive and reproduce A) Biodiversity. B) Fitness. C) Gene flow. D) Generation. Show Answer Correct Answer: B) Fitness. 24. A scientist wants to determine if two species of mammals are related. Which of the following is the best evidence in determining if the species had a common ancestor. A) Both species move in similar ways. B) Both species both live in the same area. C) Both species have very similar DNA sequences. D) The embryos of both species are similar. Show Answer Correct Answer: C) Both species have very similar DNA sequences. 25. Is the process by which certain traits become more or less common in a population over time due to differences in survival and reproduction rates. It is one of the key mechanisms of evolution and is driven by the environment and the interactions between organisms and their surroundings. A) Inbreeding. B) Artificial Selection. C) Natural Selection. D) Adaptation. Show Answer Correct Answer: C) Natural Selection. 26. During a class discussion, Khalila asked about the importance of certain species in maintaining the balance of an ecosystem. What is the role of keystone species in an ecosystem? A) They have a disproportionately large impact on their environment. B) They are the top predators in the ecosystem. C) They are the primary producers in the ecosystem. D) They are the most abundant species in the ecosystem. Show Answer Correct Answer: A) They have a disproportionately large impact on their environment. 27. What is the value of a transitional fossil? A) Transitional forms show the evolutionary steps between species. B) Transitional forms are evidence of punctuated equilibrium. C) All the above. D) None of the above. Show Answer Correct Answer: A) Transitional forms show the evolutionary steps between species. 28. The differences between living things are also called ..... A) Virginia. B) Vultures. C) Variation. D) None of the above. Show Answer Correct Answer: C) Variation. 29. Analogous structures show common ancestry. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 30. Which of the following is an example of adaptation in bearded dragons? A) A bearded dragon growing larger in a nutrient-rich environment. B) Bearded dragons that can change their skin color to reflect more sunlight and regulate their body temperature. C) A bearded dragon moving to a shaded area to cool down. D) Bearded dragons laying eggs in the summer when temperatures are higher. Show Answer Correct Answer: B) Bearded dragons that can change their skin color to reflect more sunlight and regulate their body temperature. 31. Which of the following is considered a key piece of evidence for evolution due to its demonstration of transitional forms? A) Mimicry. B) Genetic drift. C) Fossil record. D) Artificial selection. Show Answer Correct Answer: C) Fossil record. 32. A paleontologist is most likely to study: A) Biochemistry. B) Human genetics. C) Animal behavior. D) Fossils. Show Answer Correct Answer: D) Fossils. 33. TRUE or FALSE:Natural selection will still occur if individuals are exactly the same. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 34. What type of organism can be found in extreme environments such as hot springs? A) Viruses. B) Archaea. C) Eukaryotes. D) None of these. Show Answer Correct Answer: B) Archaea. 35. Homologous Structures are from what type of Evolution? A) Divergent. B) Convergent. C) All the above. D) None of the above. Show Answer Correct Answer: A) Divergent. 36. What is population genetics? A) The study of genetic variation within families. B) The study of genetic variation within individuals. C) The study of genetic variation within and between populations. D) The study of genetic variation within species. Show Answer Correct Answer: C) The study of genetic variation within and between populations. 37. During a giraffe's lifetime, its neck will become longer as it reaches for leaves on taller trees. Which scientist would agree with this idea? A) Charles Darwin. B) Alfred Wallace. C) Jean-Baptist Lamark. D) Thomas Malthus. Show Answer Correct Answer: C) Jean-Baptist Lamark. 38. Who observed variations in the characteristics of plants and animals on different islands of the Galapagos? A) Charles Lyell. B) James Hutton. C) Charles Darwin. D) Thomas Malthus. Show Answer Correct Answer: C) Charles Darwin. 39. Individuals undergo evolution. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 40. Fossils of canines were found on opposite sides of a mountain range. The fossils are from species that are similar but not identical. These fossils were very similar, although the climates and regions were extremely different on each side of the range. These fossils provide evidence for the theory of evolution. What does the similarity of the fossils exemplify? A) Analogous structures. B) Coevolution. C) Vestigial structures. D) Biogeography. Show Answer Correct Answer: D) Biogeography. 41. How are organisms classified in the Linnaean classification? A) Colors, sizes, shapes, textures. B) A, B, C, D, E, F, G. C) Kingdoms, divisions, classes, orders, families, genera, species. D) Primary, secondary, tertiary, quaternary, quinary, senary, septenary. Show Answer Correct Answer: C) Kingdoms, divisions, classes, orders, families, genera, species. 42. A common bone structure found in several organisms suggests that they ..... A) Live for a long time. B) Evolved slowly. C) All grow at different rates. D) Share a common ancestor. Show Answer Correct Answer: D) Share a common ancestor. 43. Change over time is A) Generation. B) Biogenesis. C) Evolution. D) Growth. Show Answer Correct Answer: C) Evolution. 44. A ..... is an extinct ocean shellfish. A) Fossil. B) Extinct. C) Trilobite. D) Paleontologist. Show Answer Correct Answer: C) Trilobite. 45. Which of the following statements best explains the Theory of Natural Selection? A) Organisms develop desirable structures to survive in a given environment. B) Acquired characteristics of parents can be passed on to offspring. C) Organs that are not used may disappear, while organs that are constantly used may develop. D) In nature, the organism with desirable characteristics may survive, while those with weaker traits may not. Show Answer Correct Answer: D) In nature, the organism with desirable characteristics may survive, while those with weaker traits may not. 46. Intermediate fossil forms are important evidence of evolution because they show A) How organisms change over time. B) Molecular homologies. C) How animals behaved in their environments. D) How the embryos of organisms develop. Show Answer Correct Answer: A) How organisms change over time. 47. In the context of evolution, what does the term 'fitness' refer to? A) The physical strength of an organism. B) The ability of an organism to survive and reproduce. C) The speed at which an organism can move. D) The size of an organism's population. Show Answer Correct Answer: B) The ability of an organism to survive and reproduce. 48. In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative individuals do not. If the Rh-positive phenotype is produced by a dominant gene (A), and the Rh-negative phenotype is due to its recessive allele (a), what is the frequency of the Rh-positive allele if 84% of a population is Rh-positive? A) 0.48. B) 0.60. C) 0.16. D) 0.04. Show Answer Correct Answer: B) 0.60. 49. Nonrandom mating tends to ..... the frequencies of ..... genotypes. A) Decrease; homozygous recessive. B) Increase; heterozygous. C) Decrease; homozygous. D) Increase; homozygous dominant. E) Increase; homozygous. Show Answer Correct Answer: E) Increase; homozygous. 50. Homologous structures in different species are evidence of what evolutionary concept? A) Convergent evolution. B) Divergent evolution. C) Parallel evolution. D) Co-evolution. Show Answer Correct Answer: B) Divergent evolution. 51. Mammals first appeared or emerged in this era: A) Paleozoic. B) Mesozoic. C) Cenozoic. D) Industrial. Show Answer Correct Answer: B) Mesozoic. 52. What does the "Sonic Hedgehog" gene do? A) Repeat spine vertebrae. B) Create digits on hands and feet. C) Turns off genes. D) Causes mutations. Show Answer Correct Answer: B) Create digits on hands and feet. 53. The preserved remains or trace of an organism that was once living A) Fossil. B) Fossil Record. C) Rock Strata. D) Stratigraphy. Show Answer Correct Answer: A) Fossil. 54. What is the primary mechanism by which evolution occurs according to Darwin's theory? A) Gene flow. B) Artificial selection. C) Natural selection. D) Genetic drift. Show Answer Correct Answer: C) Natural selection. 55. These notes were taken during a class about biological evolution, but the subject title is missing.-results from immigration-new genes brought into a population-variation in a population increasesWhat do the notes describe? A) Genetic drift. B) Mutation. C) Natural selection. D) Gene flow. Show Answer Correct Answer: D) Gene flow. 56. Which piece of evidence BEST supports the endosymbiotic theory of organelle evolution? A) Mitochondria and chloroplast are the same size as present day extant bacteria. B) They divide by a process that is similar to meiosis. C) Mitochondria and chloroplast both contain DNA and can make their own proteins. D) None of the above. Show Answer Correct Answer: C) Mitochondria and chloroplast both contain DNA and can make their own proteins. 57. What is the movement of genes into and out of a gene pool called? A) Random mating. B) Nonrandom mating. C) Gene flow. D) Direct evolution. Show Answer Correct Answer: C) Gene flow. 58. Populations ..... over time. Individual organisms can not, and this process takes a very long time. A) Evolution. B) Analogous Structure. C) Founder Effect. D) Fitness. E) Speciation. Show Answer Correct Answer: A) Evolution. 59. Remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species. (Hip bone in whales) A) Homologous structure. B) Analogous structure. C) Vestigial structure. D) None of the above. Show Answer Correct Answer: C) Vestigial structure. 60. Darwin noticed differences among living things in certain patterns that was explained as ..... A) Heritable Traits. B) Mutations. C) Biological Diversity. D) Selective breeding. Show Answer Correct Answer: C) Biological Diversity. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 7 Evolution Quiz 1Class 12 Biology Chapter 7 Evolution Quiz 2Class 12 Biology Chapter 7 Evolution Quiz 4Class 12 Biology Chapter 7 Evolution Quiz 5Class 12 Biology Chapter 7 Evolution Quiz 6Class 12 Biology Chapter 7 Evolution Quiz 7Class 12 Biology Chapter 7 Evolution Quiz 8Class 12 Biology Chapter 7 Evolution Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books