This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When comparing the DNA of two different organisms, the more differences in the DNA base pairs the more- A) Closely related they are. B) Distantly related they are. C) It doesn't prove anything. D) They look alike. Show Answer Correct Answer: B) Distantly related they are. 2. Which will most likely cause variations to occur within a species? A) Competition. B) Mutation. C) Mutualism. D) Predation. Show Answer Correct Answer: B) Mutation. 3. Body part that is similar in function as a body part of another organism but is structurally different. A) Analogous structure. B) Homologous structure. C) Vestigial structure. D) None of the above. Show Answer Correct Answer: A) Analogous structure. 4. An organism with no nucleus A) Prokaryote. B) EukaryoteEukaryote. C) All the above. D) None of the above. Show Answer Correct Answer: A) Prokaryote. 5. ..... is the era of primitive life. A) Archaeozoic. B) Proterozoic. C) Paleozoic. D) Azoic. Show Answer Correct Answer: A) Archaeozoic. 6. ..... :Genetic Change in a population or species of living organisms over a period of time. A) Evolution. B) Natural Selection. C) Genetic Varability. D) Ecology. Show Answer Correct Answer: A) Evolution. 7. Scientists have concluded that snakes evolved from an ancestor with legs. Which of the following statements provides the best evidence for this conclusion? A) Most species of snakes live on land. B) Snakes move extremely fast to catch their prey. C) Snakes have a well-developed backbone and muscular system. D) Some species have limb buds during their embryonic development. Show Answer Correct Answer: D) Some species have limb buds during their embryonic development. 8. Natural selection acts on ..... traits-traits passed from parent to offspring. A) Heritable. B) Acquired. C) Temporary. D) Environmental. Show Answer Correct Answer: A) Heritable. 9. What happens through evolution? A) The DNA of a species changes over many generations. B) The DNA of a species changes very quickly. C) The DNA of a species does not change. D) None of the above. Show Answer Correct Answer: A) The DNA of a species changes over many generations. 10. How does the presence of a keystone species affect biodiversity in an ecosystem? A) It decreases biodiversity by outcompeting other species. B) It increases biodiversity by maintaining balance among species. C) It has no effect on biodiversity. D) It leads to the extinction of weaker species. Show Answer Correct Answer: B) It increases biodiversity by maintaining balance among species. 11. Linage that involved from the root and remains unbranched is the ..... A) Basel taxon. B) Root taxon. C) Sister taxon. D) None of the above. Show Answer Correct Answer: A) Basel taxon. 12. What is the significance of the fossil record in understanding evolutionary processes? A) It provides direct evidence of the genetic makeup of ancient organisms. B) It shows the chronological order of species appearance and extinction. C) It demonstrates the exact environmental conditions of past eras. D) It reveals the dietary habits of extinct species. Show Answer Correct Answer: B) It shows the chronological order of species appearance and extinction. 13. Whose work on biogeography, particularly the distribution of species across different regions, contributed to the understanding of how species evolve in response to their environments? A) Gregor Mendel. B) Alfred Russel Wallace. C) Marie Curie. D) Charles Darwin. Show Answer Correct Answer: B) Alfred Russel Wallace. 14. Which best explains why species living in Australia are found nowhere else on Earth? A) Australia has an ecosystem different from any other area on Earth. B) Humans have genetically altered many Australian species in laboratories. C) Australian species were genetically altered after a comet hit the landmass. D) Australia separated from other continents and species there evolved independently. Show Answer Correct Answer: D) Australia separated from other continents and species there evolved independently. 15. When a stem cell has divided and turned genes on or off those cells have A) Mutated. B) Differentiated. C) Died (apoptosis). D) A glow tag. Show Answer Correct Answer: B) Differentiated. 16. The theory of Endosymbiosis explains ..... A) The origin of eukaryotes. B) How species develop. C) How bacteria evolved. D) Why cells rely on one another. Show Answer Correct Answer: A) The origin of eukaryotes. 17. What are the 5 important parts of Natural Selection? A) Over production, variation, similar structures, common ancestor, survival of the fittest. B) Over production, variation, competition, survival of the fittest, inheritance. C) Survival of the fittest, competition, variation, inheritance, complex organisms. D) Inheritance, complex organisms, fossils, survival of the fittest, variation. Show Answer Correct Answer: B) Over production, variation, competition, survival of the fittest, inheritance. 18. Mutations that improve an individual's ability to survive and reproduce are A) Harmful. B) Neutral. C) Beneficial. D) Chromosomal. Show Answer Correct Answer: C) Beneficial. 19. Which situation would most likely result in evolution? A) A single individual leaves a large population. B) A large population loses a few individuals. C) A predator prefers one phenotype to another. D) A bird has two alleles for a certain feather color. Show Answer Correct Answer: C) A predator prefers one phenotype to another. 20. Which of the following is an example of overproduction in bearded dragons? A) A bearded dragon laying more eggs than the number of available nesting sites. B) A bearded dragon growing larger when provided with abundant food. C) Bearded dragons displaying bright colors to attract mates. D) A bearded dragon eating every insect it encounters. Show Answer Correct Answer: A) A bearded dragon laying more eggs than the number of available nesting sites. 21. Video Click HereWhy do scientists think that the first feathers were not for flight? A) The feathers were too small. B) Not all birds fly. C) Bats can fly without feathers. D) Many large feathered dinosaurs could not fly. Show Answer Correct Answer: D) Many large feathered dinosaurs could not fly. 22. Where humans have bred organisms together based on traits we like. A) Evolution. B) Natural Selection. C) Extinction. D) Artificial Selection. Show Answer Correct Answer: D) Artificial Selection. 23. Homology is? A) Similar structure due to shared ancestry. B) A type of mathematical equation. C) A method of plant propagation. D) A form of genetic mutation. Show Answer Correct Answer: A) Similar structure due to shared ancestry. 24. The intentional breeding of organisms with desirable trait in an attempt to produce offspring with similar desirable characteristics or with improved traits. A) Selective breeding. B) Genetic. C) Fitness. D) Anatomy. Show Answer Correct Answer: A) Selective breeding. 25. Which of the following is the correct way to summarize natural selection? A) Overproduction, competition, variations, fitness, survive and reproduce. B) Overproduction, variations, competition, fitness, survive and reproduce. C) Competition, fitness, survive and reproduce. D) Variations, competition, fitness, survive and reproduce. Show Answer Correct Answer: A) Overproduction, competition, variations, fitness, survive and reproduce. ← 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 6Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books