This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 9 Heredity And Evolution – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 9 Heredity And Evolution Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Write true or false for the following statements:In humans, there are two pairs of sex chromosomes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 2. Adenine can pair with which of the following nitrogenous bases? A) Cytosine. B) Uracil. C) Thymine. D) Both B & C. Show Answer Correct Answer: D) Both B & C. 3. Identify the correct pair of analogous organs among the following A) The forelimb of man and the forelimb of a frog. B) The wing of a butterfly and the wing of a bat. C) The wing of a bird and the wing of a bat. D) The forelimb of lizard and the forelimb of a frog. Show Answer Correct Answer: C) The wing of a bird and the wing of a bat. 4. How does a deciduous tree survive the cold winter? A) By growing its branches closer to the sun. B) Turning a darker color during the winter. C) Losing its leaves to conserve water and becoming dormant. D) Shrinking in size. Show Answer Correct Answer: C) Losing its leaves to conserve water and becoming dormant. 5. A flash flood carried a raft of Amazon ants away from their original population. There is enough distance between the two groups, that they will never meet in nature again. What type of reproductive barrier is this? A) Behavioral isolation. B) Temporal isolation. C) Gametic isolation. D) Geographic isolation. Show Answer Correct Answer: D) Geographic isolation. 6. Genetic differences between organisms of the same species A) Variation. B) Adaptation. C) Behavior. D) Environment. Show Answer Correct Answer: A) Variation. 7. Which of the following is a acquired traits A) Eye colour. B) Hair colour. C) Weight loss. D) Ear lobe. Show Answer Correct Answer: C) Weight loss. 8. Which of the following is NOT a vestigial structure in humans A) Coccyx. B) Ear muscle. C) Appendix. D) Hair on skin. Show Answer Correct Answer: D) Hair on skin. 9. Where would you find the anti-codon? A) TRNA. B) MRNA. C) Ribosome. D) RRNA. Show Answer Correct Answer: A) TRNA. 10. The sex of a child is determined by which of the following A) The length of the mother's pregnancy. B) The length of time between ovulation and copulation. C) The presence of an X chromosomes in an ovum. D) The presence of a Y chromosomes in a sperm. Show Answer Correct Answer: D) The presence of a Y chromosomes in a sperm. 11. According to fossil records, the horses that lived 50 million years ago were much smaller, weaker and slower than modern horses. Which process is most likely responsible for the changes that have led to the increased size, strength, and speed in horses? A) Commensalism. B) Inbreeding. C) Migration. D) Evolution by natural selection. Show Answer Correct Answer: D) Evolution by natural selection. 12. What is an inherited trait? A) A genetically determined feature that distinguishes a person from others. B) A trait acquired during an individual's lifetime. C) A trait that is common to all individuals. D) A trait that is not influenced by genetics. Show Answer Correct Answer: A) A genetically determined feature that distinguishes a person from others. 13. Links between organisms that show branching pattern of evolutionary relationships are shown by ..... A) Living fossils. B) Comparative embryology. C) Phylogenetic trees. D) Two fossil layers. Show Answer Correct Answer: C) Phylogenetic trees. 14. Two pink colored flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of cross will be:- A) Double Fertilization. B) Self Pollination. C) Cross Fertilization. D) No fertilization. Show Answer Correct Answer: C) Cross Fertilization. 15. What are the two genotypes that show the DOMINANT Phenotype A) GG, gg. B) GG, Gg. C) Gg, gg. D) None of the above. Show Answer Correct Answer: B) GG, Gg. 16. Which one of the following statements is correct?Statement 1:The gene which decides the appearance of an organism even in the presence of an alternative gene is known as a dominant gene.Statement 2:The gene which decides the appearance of an organism even in the presence of an alternative gene is known as a recessive gene. A) Statement 1. B) Statement 2. C) Both statements are correct. D) Both statements are incorrect. Show Answer Correct Answer: A) Statement 1. 17. Information about protein synthesis is stored in the ..... A) Mitochondria. B) DNA. C) RNA. D) Ribosomes. Show Answer Correct Answer: B) DNA. 18. An allele whose trait only shows up when no dominant allele is present. A) Hidden allele. B) Dominant allele. C) Recessive allele. D) Present allele. Show Answer Correct Answer: C) Recessive allele. 19. In the F1 generation, only recessive traits are expressed A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 20. An organism that has two identical alleles for a trait (purebred) A) Genotype. B) Phenotype. C) Homozygous. D) Heterozygous. Show Answer Correct Answer: C) Homozygous. 21. Who is known as father of genetics A) Darwin. B) Lamarck. C) Watson. D) Gregor Johann Mendel. Show Answer Correct Answer: D) Gregor Johann Mendel. 22. Which of the following is totally impossible outcome of Mendel A) 3 tall 1 short plant. B) 24 tall and 8 short plants. C) 8 tall and 0 short plants. D) 4 tall plants and 1 medium height plant. Show Answer Correct Answer: D) 4 tall plants and 1 medium height plant. 23. Transfer of information from a molecule of DNA TO mRNA is A) Translocation. B) Mutation. C) Transcription. D) Evolution. Show Answer Correct Answer: C) Transcription. 24. In the theory of natural selection, Darwin stated that: A) Characters acquired during the life of the organism are transmitted to its progeny. B) Environment does not play any role in the evolution of the organism. C) Variations occur due to change in genetic constitution of organism. D) Natural selection acts on the favourable variations, that appear among the organisms. Show Answer Correct Answer: D) Natural selection acts on the favourable variations, that appear among the organisms. 25. How do traits get passed from parents to offspring? A) Traits are passed through environmental factors only. B) Traits are passed from parents to offspring through genes inherited from both parents. C) Offspring inherit traits solely from the mother. D) Traits are randomly assigned without genetic influence. Show Answer Correct Answer: B) Traits are passed from parents to offspring through genes inherited from both parents. ← 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