This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 39 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Individuals that aren't well suited for their environment, won't survive or will have very few offspring are said to have ..... fitness A) High. B) Low. C) Medium. D) Moderate. Show Answer Correct Answer: B) Low. 2. Which form of Genetic Drift is the result of a few individuals becoming isolated from a larger population? A) Bottleneck Effect. B) Founder Effect. C) Female Choice. D) Male-Male Rivalry. Show Answer Correct Answer: B) Founder Effect. 3. Vestigial Structures A) Structures that have no apparent function and appear to be residual parts from a past ancestor. B) Structures that are fully functional and necessary for survival. C) Structures that are used for reproduction in modern species. D) Structures that have evolved to serve a new purpose in the organism. Show Answer Correct Answer: A) Structures that have no apparent function and appear to be residual parts from a past ancestor. 4. Most Swiss starlings produce four to five eggs in each clutch. Those producing fewer or more than this have reduced fitness. Which of the following terms best describes this? A) Artificial selection. B) Directional selection. C) Stabilizing selection. D) Disruptive selection. E) Sexual selection. Show Answer Correct Answer: C) Stabilizing selection. 5. The greatest degree of genetic variability would be expected among organisms that reproduce via A) Budding. B) Sexual recombination. C) Vegetative propagation. D) Mitosis. E) Sporulation. Show Answer Correct Answer: B) Sexual recombination. 6. Which of the following is NOT an example of evolution? A) Over many generations, wild teosinte has become corn. B) When the Grand Canyon formed, it geographically divided a squirrel population into two populations, which developed into distinct species. C) A frog begins its life as a tadpole, but becomes an amphibian. D) Finches in the Galapagos islands have diversified over time into many species each well-suited for eating a particular type of food. Show Answer Correct Answer: C) A frog begins its life as a tadpole, but becomes an amphibian. 7. An inherited trait that helps the organisms that have it to survive is known as a/an A) Niche. B) Structure. C) Characteristic. D) Adaptation. Show Answer Correct Answer: D) Adaptation. 8. Based on our knowledge on natural selection which animal would be best suited for a dry desert environment A) Human. B) Camel. C) Fish. D) Frog. Show Answer Correct Answer: B) Camel. 9. An adaptation like the finches beaks is A) Organisms better suited for their environment will survive and reproduce. B) Any physical or behavioral characteristic that helps an organism to better survive. C) Theory that organisms have changed gradually over a long period of time to form new organisms. D) None of the above. Show Answer Correct Answer: B) Any physical or behavioral characteristic that helps an organism to better survive. 10. Some marine worms and mollusks go through similar larval stages during development. Which can be inferred about their relationship? A) They share a common ancestor. B) They mate with each other. C) They compete for a habitat. D) They share the same food source. Show Answer Correct Answer: A) They share a common ancestor. 11. Which of the following is an example of homologous structures in evolutionary biology? A) The wings of a butterfly and the wings of a bat. B) The fins of a fish and the wings of a bird. C) The forelimbs of a human and the wings of a bat. D) The eyes of a human and the eyes of an octopus. Show Answer Correct Answer: C) The forelimbs of a human and the wings of a bat. 12. What does the term "speciation" refer to in evolutionary biology? A) The origin of analogous structures. B) The splitting of pre-existing species. C) The evidence from homologous structures. D) The change in allele frequency. Show Answer Correct Answer: B) The splitting of pre-existing species. 13. In an experiment studying natural selection, a population of beetles is observed over several generations. Initially, the population is mostly green, but over time, more brown beetles are observed. What is the most likely explanation for this change? A) Brown beetles are more attractive to mates. B) Green beetles migrated to a different area. C) Brown beetles are better camouflaged in their environment. D) Green beetles have a higher mutation rate. Show Answer Correct Answer: C) Brown beetles are better camouflaged in their environment. 14. Which form of Genetic Drift is the result of a sudden change drastically reducing the size of a population? A) Bottleneck Effect. B) Founder Effect. C) Female Choice. D) Male-Male Rivalry. Show Answer Correct Answer: A) Bottleneck Effect. 15. Both ancestral birds and ancestral mammals shared a common ancestor that was terrestrial. Today, penguins (which are birds) and seals (which are mammals) have forelimbs adapted for swimming. What term best describes the relationship of the bones in the forelimbs of penguins and seals, and what term best describes the flippers of penguins and seals? A) Analogous; analogous. B) Homologous; homologous. C) Analogous; homologous. D) Homologous; analogous. Show Answer Correct Answer: D) Homologous; analogous. 16. A recessive trait has the frequency of 0.3. Assuming the population is in Hardy Weinberg equilibrium, what is the expected frequency of the heterozygous population? A) 0.40. B) 0.50. C) 0.70. D) 0.90. Show Answer Correct Answer: B) 0.50. 17. If modern organisms have a lot of homologous structures, what inference might paleontologists make about those organisms? A) They are reptiles. B) One organism evolved from the other. C) The organisms have a common ancestor. D) None of the above. Show Answer Correct Answer: C) The organisms have a common ancestor. 18. Similar physical features in organisms that share a common ancestor, but the features serve completely different functions A) Homologous Structure. B) Homozogous. C) Biogeography. D) Vestigial Structure. Show Answer Correct Answer: A) Homologous Structure. 19. Which organisms are most likely to pass their traits to their offspring? A) Those that do not adapt. B) Those that are best suited to survive and reproduce. C) Those that are unable to access the resources they need to survive. D) None of the above. Show Answer Correct Answer: B) Those that are best suited to survive and reproduce. 20. Biogeography is the way species evolve ..... A) Differently. B) Similarly. C) Neither. D) Both. Show Answer Correct Answer: A) Differently. 21. Darwin's ship A) HMS Beagle. B) HMS Bugle. C) HMS Labrador. D) HMS Santa Maria. Show Answer Correct Answer: A) HMS Beagle. 22. In an experiment, a population of bacteria is exposed to an antibiotic. After several generations, some bacteria survive and reproduce. What is the most likely explanation for this observation? A) The bacteria learned to avoid the antibiotic. B) The antibiotic caused mutations in the bacteria. C) Some bacteria had a natural resistance to the antibiotic. D) The bacteria developed resistance through exposure. Show Answer Correct Answer: C) Some bacteria had a natural resistance to the antibiotic. 23. What is a vestigial structure? A) A structure vital for an organism's survival. B) A structure that has lost all or most of its function. C) A newly evolved structure. D) A structure that increases an organism's fitness. Show Answer Correct Answer: B) A structure that has lost all or most of its function. 24. What is gradualism? A) Short bursts of change. B) No change in the fossil record. C) Slow gradual changes in the fossil record. D) Periods of change followed by no change in the fossil record. Show Answer Correct Answer: C) Slow gradual changes in the fossil record. 25. Oldest and longest geologic time period A) Hadean. B) Phanerozoic. C) Precambrain. D) Jurassic. Show Answer Correct Answer: C) Precambrain. ← 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