This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 45 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Subdivisions of eras A) Eon. B) Epoch. C) Period. D) None of the above. Show Answer Correct Answer: C) Period. 2. The evolution by which new species are formed. A) Gene pool. B) Speciation. C) Analogous structures. D) Embryology. Show Answer Correct Answer: B) Speciation. 3. Species alive today have descended with modification from species that lived in the past. All organisms on Earth are united into single tree of life by the principle of: A) Modified evolution. B) Common descent. C) Homologous trees. D) Artificial selection. Show Answer Correct Answer: B) Common descent. 4. A scientific theory is proven and based on evidence. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. The appearance of an organism based on a multifactorial combination of genetic traits and environmental factors. A) Genotype. B) Phenotype. C) Mutation. D) Gene Flow. Show Answer Correct Answer: B) Phenotype. 6. A structure that an organism has but no longer serves a function. A) Homologous Structure. B) Analogous Structure. C) Vestigial Structure. D) Archaic Structure. Show Answer Correct Answer: C) Vestigial Structure. 7. Which of the following statements explains genetic variation? Genetic variation arises ..... A) When organisms need to change in order to survive in a new environment. B) Through mutation and sexual recombination. C) From environmental changes that affect organisms. D) From traits acquired during the lifetime of an organism. Show Answer Correct Answer: B) Through mutation and sexual recombination. 8. Evolution A) The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. B) A theory that suggests all species are created independently and do not change over time. C) The study of how living organisms interact with their environment. D) A method of breeding plants and animals to enhance desired traits. Show Answer Correct Answer: A) The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. 9. Which word is defined as a reduced form of a functional structure in 1 organism that shows up as fully functional in another? A) Homologous structures. B) Vestigial structures. C) Analogous structure. D) DNA. Show Answer Correct Answer: B) Vestigial structures. 10. Which of the following best explains the concept of punctuated equilibrium? A) Evolution occurs at a slow and steady pace. B) Evolution occurs in rapid bursts followed by long periods of stability. C) Evolution occurs only during periods of environmental change. D) Evolution occurs at a constant rate over time. Show Answer Correct Answer: B) Evolution occurs in rapid bursts followed by long periods of stability. 11. Which is a mechanism for change in allele frequency? A) Gene flow. B) Genetic drift. C) Natural selection. D) All answers are correct. Show Answer Correct Answer: D) All answers are correct. 12. Which of the following statements about the DNA of two species is TRUE? A) The more similar the DNA, the more distant the common ancestor is likely to be. B) The more similar the DNA, the more recent the common ancestor is likely to be. C) The more different the DNA, the more likely it is that their common ancestor is extinct. D) You cannot conclude anything about common ancestry using DNA evidence. Show Answer Correct Answer: B) The more similar the DNA, the more recent the common ancestor is likely to be. 13. Fossils A) The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. B) A type of rock formed from volcanic activity. C) A living organism that has existed for millions of years. D) A modern-day animal that has adapted to its environment. Show Answer Correct Answer: A) The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. 14. Cystic Fibrosis is the most common genetic disease in Caucasian populations. Parents can be carriers and be unaffected. This means the disease is A) A single point mutation. B) Domminant. C) Missense mutation. D) Recessive. Show Answer Correct Answer: D) Recessive. 15. What does 'fitness' mean in a biological context? A) The speed at which an organism can move. B) The number of offspring an organism produces. C) The physical strength of an organism. D) The ability to survive in harsh conditions. Show Answer Correct Answer: B) The number of offspring an organism produces. 16. What is the study of embryos and their development to understand evolutionary relationships called? A) Paleontology. B) Embryology. C) Genetics. D) Taxonomy. Show Answer Correct Answer: B) Embryology. 17. What is a fossil? A) An individual animal, plant, or single-celled life form. B) Can only be found about for humans. C) Show that there has never been other species on earth. D) Remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. Show Answer Correct Answer: D) Remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. 18. Which is NOT an ideal condition for bacteria to grow? A) Warm. B) Moist. C) Cool. D) Dark places with a food supply. Show Answer Correct Answer: C) Cool. 19. What is the process in which humans breed organisms for certain traits? A) Natural selection. B) Inheritance. C) Artificial selection. D) Descent withOUT modification. Show Answer Correct Answer: C) Artificial selection. 20. The average length of a rabbit's ears decreases the farther north the rabbits live. This variation is an example of A) Genetic drift. B) Cline. C) Geographic isolation. D) Founder effect. Show Answer Correct Answer: B) Cline. 21. Which IS NOT used as evidence for evolution? A) Fossils. B) Natural Selection. C) Early Development/Embryos. D) Body Structure/Anatomy. E) DNA/Proteins. Show Answer Correct Answer: B) Natural Selection. 22. An organism's relative ability to survive and produce fertile offspring is known as ..... A) Struggle for existence. B) Fitness. C) All the above. D) None of the above. Show Answer Correct Answer: B) Fitness. 23. The process by which unrelated organism evolve similar characteristics is called A) Biology. B) Convergent evolution. C) Ordering. D) Classification. Show Answer Correct Answer: B) Convergent evolution. 24. Evolution is the widely held notion that all life is related and has descended from a common ancestor:the birds and the bananas, the fishes and the flowers ..... all related That is, complex creatures evolve from more simplistic ancestors naturally over time. A) Fact. B) Theory. C) Law. D) None of the above. Show Answer Correct Answer: B) Theory. 25. According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the fossil record means that A) Speciation occurred instantaneously. B) The species will consequently have a relatively short existence, compared with other species. C) Speciation occurred in one generation. D) Speciation occurred rapidly in geologic time. Show Answer Correct Answer: D) Speciation occurred rapidly in geologic time. ← 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