This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 67 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 67 (22 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In what instances might punctuated equilibrium occur? A) When the environment is changing rapidly. B) When the environment undergoes gradual change for a very long period. C) During hot periods. D) During cold periods. Show Answer Correct Answer: A) When the environment is changing rapidly. 2. What is the unique family of genes in animals that plays an important role in the development of embryos, and controls the expression of other genes influencing animal morphology? A) APOE. B) Alpha globin. C) FOX P2. D) HOX. Show Answer Correct Answer: D) HOX. 3. ..... includes the familiar kingdoms of plants, animals, and fungi. A) Eukarya. B) Archaea. C) Bacteria. D) None of the above. Show Answer Correct Answer: A) Eukarya. 4. Which mechanism of change occurs when a individuals from a population migrate to a new population? A) Mutation. B) Gene Flow. C) Genetic Drift. D) Natural Selection. Show Answer Correct Answer: B) Gene Flow. 5. Why are antibiotics used cautiously? A) Because they are expensive. B) To avoid creating antibiotic-resistant bacteria. C) To preserve them for future generations. D) To prevent the spread of viruses. Show Answer Correct Answer: B) To avoid creating antibiotic-resistant bacteria. 6. 2 colors of lizards live in the same environment One blends in to the ground this is an example A) Variation and adaptation. B) Struggle for existence. C) Survival of the fittest. D) None of the above. Show Answer Correct Answer: A) Variation and adaptation. 7. A species of ivy invades the beetles' current habitat and become the dominant form of vegetation. The color of the ivy's leaves is similar to the beetles' average color.Considering selective pressure on the beetles from predatory birds, which type of natural selection will most likely occur in this situation? A) Disruptive. B) Stabilizing. C) Directional toward dark body color. D) Directional toward light body color. Show Answer Correct Answer: B) Stabilizing. 8. Poaching in the African Savannah has led to a severe ..... of the Cheetah population, because their population size was dramatically reduced, leading to less genetic diversity. A) Homologous Structure. B) Natural Selection. C) Vestigial Structure. D) Fossil. E) Bottle Neck effect. Show Answer Correct Answer: E) Bottle Neck effect. 9. Where did the roughly 25, 000 working genes in the human genome come from? A) Modern genes probably came from other species that existed before and were copied. B) Modern genes probably started with the mutations that happened around the turn of the millennium. C) Modern genes probably descended from a much smallernumber of genes in the earliest life forms. D) None of the above. Show Answer Correct Answer: C) Modern genes probably descended from a much smallernumber of genes in the earliest life forms. 10. In terms of evolution theory, which explains why giraffes have come to have such long necks? A) Giraffes prefer other giraffes that have long necks as their mates. B) Stretching to get food in high trees made their necks longer and this trait was passed to offspring. C) Giraffe food contains hormones that cause their vertebrae to lengthen. D) Giraffes born with the longest necks stayed alive when food was scarce and passed this trait on to their offspring. Show Answer Correct Answer: D) Giraffes born with the longest necks stayed alive when food was scarce and passed this trait on to their offspring. 11. Male peacocks are famous for their colorful, showy tails, whereas female peahens are brown with no fancy tails. This is an example of sexual dimorphism, found in organisms with two different looks within the species. What mode of selection produces species exhibiting sexual dimorphism? A) Stabilizing. B) Postzygotic selection. C) Artificial selection. D) Sexual selection. Show Answer Correct Answer: D) Sexual selection. 12. What role does DNA sequencing play in providing evidence for evolution? A) It shows that all organisms have identical DNA. B) It reveals genetic similarities and differences among species. C) It proves that mutations do not occur. D) It indicates that DNA is unique to each individual species. Show Answer Correct Answer: B) It reveals genetic similarities and differences among species. 13. Occurs when two populations of organisms form a specialized relationship and thus change in response to each other A) Convergent Evolution. B) Punctuated equilibrium. C) Coevolution. D) Speciation. Show Answer Correct Answer: C) Coevolution. 14. Organisms with traits that give them a survival advantage are more likely to ..... and ..... A) Live, reproduce. B) Hide, sleep. C) Migrate, hibernate. D) Eat, grow. Show Answer Correct Answer: A) Live, reproduce. 15. Caffeine is a compound found in the seeds of many different plants, such as coffee beans, cola nuts, and cacao beans (the source of chocolate). The presence of this chemical in all three types of plants suggests that these plants A) Inherited identical mutations. B) Share a common ancestry. C) Were exposed to the same type of radiation in the past. D) Produced in a lab. Show Answer Correct Answer: B) Share a common ancestry. 16. Biotic A) Any organism that is living or was once living. B) Anything that is NOT living and never was living. C) Organisms with a TRUE nucleus!. D) Organisms that do not have a nucleus. they came BEFORE eukaryotic cells. Show Answer Correct Answer: A) Any organism that is living or was once living. 17. ..... , or selective breeding, is one way that humans impact evolution. One example is how the Belgian Blue cow has been bred to have greater muscle mass. A) Artificial selection. B) Homologous. C) All the above. D) None of the above. Show Answer Correct Answer: A) Artificial selection. 18. Are structures found in the center (nucleus) of cells that carry long pieces of DNA. DNA is the material that holds genes. It is the building block of the human body. A) Heredity. B) Gregor Mendel. C) James Watson and Francis Crick. D) Chromosomes. Show Answer Correct Answer: D) Chromosomes. 19. Organisms that are least likely to experience extinction over the long term are most likely to be found in A) Very stable habitats. B) Desserts. C) Polar regions. D) Areas inhabited by humans. Show Answer Correct Answer: A) Very stable habitats. 20. Darwin referred to this as survival of the fittest. Over time, it results in changes in the inherited characteristics of a population. A) Natural Selection. B) Genetic Variation. C) Survival of the Fittest. D) Extinction. Show Answer Correct Answer: A) Natural Selection. 21. Which cellular organelle is thought to have evolved from a prokaryote that was able to use oxygen? A) Chloroplast. B) Golgi apparatus. C) Mitochondrion. D) Ribosome. Show Answer Correct Answer: C) Mitochondrion. 22. ..... is the preserved remains or traces of ancient organisms A) Evolution. B) Fossil. C) Adaptation. D) Fitness. E) Natural Selection. Show Answer Correct Answer: B) Fossil. ← PreviousRelated 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