This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Recently, scientists have been able to use ..... to find common proteins and amino acids to determine how closely related species are. A) DNA. B) Vestigial structures. C) Fossils. D) Homologous structures. Show Answer Correct Answer: A) DNA. 2. 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. 3. 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) Transversion mutation. C) Frame-shift mutation. D) Stop mutation. Show Answer Correct Answer: B) Transversion mutation. 4. The death of every member of a species. A) Competition. B) Population. C) Extinction. D) Evidence. Show Answer Correct Answer: C) Extinction. 5. A group of similar organisms that can mate with each other and produce offspring is called a A) Kingdom. B) Phylum. C) Species. D) Genus. Show Answer Correct Answer: C) Species. 6. Which of the following provides evidence for evolution by showing similarities in structures among different species, suggesting a common ancestor? A) Comparative anatomy. B) Comparative embryology. C) Fossil record. D) Molecular biology. Show Answer Correct Answer: A) Comparative anatomy. 7. Which of the following are not early invertebrates that existed during the Paleozoic era? A) Arachnid. B) Trilobite. C) Amphibians. D) Crustaceans. Show Answer Correct Answer: C) Amphibians. 8. 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. 9. Fossils that are created from minerals that replace the existing cell structure, creating a replica are A) Cast. B) Mold. C) Trace. D) Behavioral. Show Answer Correct Answer: A) Cast. 10. 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. 11. More than one consecutive footfall A) UNDER TRACK. B) AMBER. C) TRACK INFILLS. D) TRACKWAY-. Show Answer Correct Answer: D) TRACKWAY-. 12. 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. 13. 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. 14. Which of the following is not involved in natural selection? A) Competition for resources. B) Differences in reproductive success. C) Inheritable variation in populations. D) Breeder selects traits. Show Answer Correct Answer: D) Breeder selects traits. 15. Darwin's expedition took how many years? A) 3. B) 4. C) 5. D) 6. Show Answer Correct Answer: C) 5. 16. Which is the correct order of appearance on Earth? A) Photosynthetic prokaryotes, eukaryotes, primordial soup, non-photosynthetic prokaryotes. B) Primordial soup, non-photosynthetic prokaryotes, photosynthetic prokaryotes, eukaryotes. C) Primordial soup, eukaryotes, photosynthetic prokaryotes, non-photosynthetic prokaryotes. D) Non-photosynthetic prokaryotes, photosynthetic prokaryotes, primordial soup, eukaryotes. Show Answer Correct Answer: B) Primordial soup, non-photosynthetic prokaryotes, photosynthetic prokaryotes, eukaryotes. 17. What evolutionary process leads to homologous structures appearing dissimilar? A) Convergent evolution. B) Divergent evolution. C) Artificial selection. D) Genetic drift. Show Answer Correct Answer: B) Divergent evolution. 18. 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. 19. The mutation theory for organic evolution is put forward by ..... A) Charls Darwin b) c) d). B) Erasmus Darwin. C) De Vries. D) Mendel. Show Answer Correct Answer: C) De Vries. 20. 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. 21. 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. 22. Refers to the physical and behavioral traits that allow an organism to survive and reproduce A) Fitness. B) Gene flow. C) Generation. D) Biodiversity. Show Answer Correct Answer: A) Fitness. 23. 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. 24. 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) Natural Selection. B) Adaptation. C) Artificial Selection. D) Inbreeding. Show Answer Correct Answer: A) Natural Selection. 25. 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 are the most abundant species in the ecosystem. B) They have a disproportionately large impact on their environment. C) They are the primary producers in the ecosystem. D) They are the top predators in the ecosystem. Show Answer Correct Answer: B) They have a disproportionately large impact on their environment. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 7 Evolution Quiz 1Class 12 Biology Chapter 7 Evolution Quiz 2Class 12 Biology Chapter 7 Evolution Quiz 3Class 12 Biology Chapter 7 Evolution Quiz 4Class 12 Biology Chapter 7 Evolution Quiz 5Class 12 Biology Chapter 7 Evolution Quiz 7Class 12 Biology Chapter 7 Evolution Quiz 8Class 12 Biology Chapter 7 Evolution Quiz 9Class 12 Biology Chapter 7 Evolution Quiz 10Class 12 Biology Chapter 7 Evolution Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books