This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 9 Heredity And Evolution – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 9 Heredity And Evolution Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. It states that when certain organs become specially developed as a result of some environmental need. A) Theory of use and disuse. B) Theory of Evolution. C) Theory of need. D) Theory of acquired characteristics. Show Answer Correct Answer: A) Theory of use and disuse. 2. The maleness of a child is determined A) The X chromosome in the zygote. B) The Y chromosome in the zygote. C) The cytoplasm of germ cell which determines the sex. D) Sex is determined by chance. Show Answer Correct Answer: B) The Y chromosome in the zygote. 3. Speciation takes place when variation occurs with A) Geographical isolation. B) Death of organisms. C) Changes due to accident. D) Gaining weight. Show Answer Correct Answer: A) Geographical isolation. 4. A pure dominant pea plant producing round-yellow seeds is crossed with pure recessive pea plant producing wrinkled-green seeds. The number of plants bearing round-green seeds in the 1 F generation of Mendel's experiment is A) 0. B) 1. C) 3. D) 9. Show Answer Correct Answer: A) 0. 5. When all of the organisms of a species have died it is called A) Evolution. B) Extinction. C) Adaptation. D) Natural selection. Show Answer Correct Answer: B) Extinction. 6. Which of these bases does not exist in RNA? A) C. B) T. C) U. D) A. Show Answer Correct Answer: B) T. 7. A person has a disease which is linked with its Y-chromosome. This disease will be inherited to his: A) All children. B) All male children. C) All female children. D) Not inherited to any of the children. Show Answer Correct Answer: B) All male children. 8. ..... is the connecting link between reptiles and mammals A) Peripatus. B) Lungfish. C) Salamander. D) Duck billed platypus. Show Answer Correct Answer: D) Duck billed platypus. 9. Protein synthesized by DNA through RNA is called as ..... A) Internal dogma. B) Transition. C) Central dogma. D) Transcription. Show Answer Correct Answer: C) Central dogma. 10. Example of a homologous organ A) The arm of a human, wing of a bird. B) Wing of an insect, wing of a bird. C) Leg of a dog, leg of a spider. D) None of the above. Show Answer Correct Answer: A) The arm of a human, wing of a bird. 11. New species may be formed if:(i) DNA undergoes significant changes in germ cells(ii) chromosome number changes in the gamete(iii) there is no change in the genetic material(iv) mating does not take place A) (i) and (ii). B) (i) and (iii). C) .(ii) and (iv) and (iv) and (iv). D) (i), (ii) and (iii). Show Answer Correct Answer: A) (i) and (ii). 12. Which of the following is an inherited traits A) Swimming. B) Attached ear lobe. C) Dancing. D) Writing. Show Answer Correct Answer: B) Attached ear lobe. 13. The remaps (or impressions) of dead animals or plant? that lived in the remote past are known as A) Extinct species. B) Fossils. C) Naturally selected species. D) None of the above. Show Answer Correct Answer: B) Fossils. 14. What did Mendel conclude from his dihybrid cross experiments? A) Traits are independently inherited. B) Traits are always inherited together. C) Traits are not inherited at all. D) Traits are influenced by the environment. Show Answer Correct Answer: A) Traits are independently inherited. 15. Genetics is the study of A) Life. B) Life forms. C) Characters. D) Heredity. Show Answer Correct Answer: D) Heredity. 16. The transmission of characters from the parents to their offsprings is called: A) Evolution. B) Heredity. C) Variation. D) All the above. Show Answer Correct Answer: B) Heredity. 17. What would indicate that a series of fossils represent evolution? A) The fossils were identical. B) The fossils were found in the same layers of rock. C) The fossils show similarities. D) The fossils were completely different. Show Answer Correct Answer: C) The fossils show similarities. 18. Which of the following modes of reproduction leads to variations? A) Asexual. B) Sexual. C) Both. D) Neither. Show Answer Correct Answer: C) Both. 19. Proteins synthesized by DNA through the RNA is called ..... A) Central Dogma. B) Transcription. C) RNA ploymerase. D) None of the above. Show Answer Correct Answer: A) Central Dogma. 20. Which of the following decides the sex of the child? A) Male gamete, i.e., sperm. B) Female gamete, i.e., ovum. C) Both sperm and ovum. D) Mother. Show Answer Correct Answer: A) Male gamete, i.e., sperm. 21. A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures? A) Carrot and potato. B) . Carrot and tomato. C) Radish and carrot. D) Radish and potato. Show Answer Correct Answer: C) Radish and carrot. 22. What is genetics? A) The study of DNA nucleotides. B) The study of heredity. C) The study of a cell dividing into 2. D) The study of eye color. Show Answer Correct Answer: B) The study of heredity. 23. If the organs are similar in function but the basic structure are different, then they are called ..... A) Analogous organs. B) Homologous organs. C) Vestigial organs. D) None of these. Show Answer Correct Answer: A) Analogous organs. 24. The preserved remains of parts or whole of an organisms over a long period of time gives rise to a A) Pickled organism. B) Stone form organism. C) Extinct organism. D) Fossil. Show Answer Correct Answer: D) Fossil. 25. Write true or false for the following statements:A child who inherits an X-chromosome form father will be a boy. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. ← PreviousNext →Related QuizzesClass 10 Science Chapter 9 Heredity And Evolution Quiz 1Class 10 Science Chapter 9 Heredity And Evolution Quiz 2Class 10 Science Chapter 9 Heredity And Evolution Quiz 3Class 10 Science Chapter 9 Heredity And Evolution Quiz 4Class 10 Science Chapter 9 Heredity And Evolution Quiz 5Class 10 Science Chapter 9 Heredity And Evolution Quiz 6Class 10 Science Chapter 9 Heredity And Evolution Quiz 7Class 10 Science Chapter 9 Heredity And Evolution Quiz 8Class 10 Science Chapter 9 Heredity And Evolution Quiz 9Class 10 Science Chapter 9 Heredity And Evolution Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books