This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 9 Heredity And Evolution – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 9 Heredity And Evolution Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements is correct?Statement 1:The proportion of a particular allele in a population is known as gene frequency.Statement 2:All the genes in a population of a species at a given time is known as gene pool. A) Statement 1 is correct and statement 2 is incorrect. B) Statement 2 is correct and statement 1 is incorrect. C) Both the statements are correct. D) Both statements are incorrect. Show Answer Correct Answer: C) Both the statements are correct. 2. A woman has type AB blood and her husband has type O blood. The doctor tells them their child has type O blood. She thinks this is very strange. Why? A) She can't be the mother of a type O child. B) Her husband can't be the father of a type O child. C) Type O blood is very rare. D) There's nothing strange about it. Show Answer Correct Answer: A) She can't be the mother of a type O child. 3. Humans have two different sex chromosomes, X and Y. Based on Mendel's laws, a male offspring will inherit which combination of chromosomes? A) Both the X chromosomes from one of its parents. B) Both the Y chromosomes from one of its parents. C) Combination of X chromosomes from either of its parents. D) Combination of X and Y chromosome from either of its parents. Show Answer Correct Answer: D) Combination of X and Y chromosome from either of its parents. 4. The different forms of a gene A) Heredity. B) Genetics. C) Gene. D) Alleles. Show Answer Correct Answer: D) Alleles. 5. This is an inherited trait that helps an organism survive and reproduce in its environment. A) Evolution. B) Population. C) Environment. D) Adaptation. Show Answer Correct Answer: D) Adaptation. 6. Remains of ancient organisms are called A) Extinctions. B) Fossils. C) Mutations. D) Variations. Show Answer Correct Answer: B) Fossils. 7. Explain the concept of adaptation. A) Adaptation is the process of change by which an organism becomes better suited to its environment. B) Adaptation is the method by which organisms reproduce more quickly. C) Adaptation refers to the ability of an organism to remain unchanged over time. D) Adaptation is the process of an organism becoming extinct. Show Answer Correct Answer: A) Adaptation is the process of change by which an organism becomes better suited to its environment. 8. Which type of reproduction maximises the rate of variation A) Sexual Reprduction. B) Sexual Reproduction. C) Sexual reproduction. D) Sexual Reproductoin. Show Answer Correct Answer: B) Sexual Reproduction. 9. Protein Synthesis means ..... A) Production of Proteins. B) Destruction of Proteins. C) Production of genes. D) None of the above. Show Answer Correct Answer: A) Production of Proteins. 10. What is heredity? A) The transmission of characters from parents to offspring. B) The process of evolution. C) The study of genetics. D) The formation of new species. Show Answer Correct Answer: A) The transmission of characters from parents to offspring. 11. A pregnant woman has an equal chance of her baby being blood group A or blood group AB. Which one out of the four shows the possible genotypes of the woman and the father of her child? A) I$^{A}$ I$^{B}$ and I$^{B}$ i. B) I$^{O}$ I$^{B}$ and I$^{A}$ i. C) I$^{A}$ I$^{A}$ and I$^{B}$ i. D) I$^{A}$ I$^{O}$ and I$^{B}$ i. Show Answer Correct Answer: C) I$^{A}$ I$^{A}$ and I$^{B}$ i. 12. A couple has 2 daughters. What is the possibility of their having a girl next time? A) 1. B) 0.9. C) 0.5. D) 0.1. Show Answer Correct Answer: C) 0.5. 13. ..... is the observable set of characteristics of an organism A) Phenotype. B) Genes. C) DNA. D) All of the above. Show Answer Correct Answer: A) Phenotype. 14. The allele that is fully expressed by itself: A) Recessive. B) Homozygous. C) Dominant. D) Heterozygous. Show Answer Correct Answer: C) Dominant. 15. Which of the following can be called a characteristic? A) Plants can photosynthesis. B) We have 2 eyes. C) Mango tree is multicellular. D) All of these. Show Answer Correct Answer: D) All of these. 16. Homologous organs have A) Organ which have same structure but perform different function. B) Organ which have same structure and perform same function. C) Organ which have different structure but perform same function. D) Organ which have different structure and perform different function. Show Answer Correct Answer: A) Organ which have same structure but perform different function. 17. What does the law of segregation state? A) Separate genes are passed independently from each other, from parent to offspring. B) Every individual possesses two alleles for any particular trait and which allele a parent gives its offspring is completely random. C) Just because an allele is dominant, doesn't mean it is inherited more often. D) A recessive allele is expressed less than a dominant allele. Show Answer Correct Answer: B) Every individual possesses two alleles for any particular trait and which allele a parent gives its offspring is completely random. 18. TT A) Homozygous. B) Heterozygous. C) Both of the above. D) None of the above. Show Answer Correct Answer: A) Homozygous. 19. The differences in the characters among the individuals of a species are called: A) Evolution. B) Heredity. C) Variation. D) All the above. Show Answer Correct Answer: C) Variation. 20. What are chromosomes? A) Long thread-like structures in the nucleus of a cell that contain hereditary information. B) Chemicals in the chromosome that carry traits in a coded form. C) Parts of a chromosome that control specific biological functions. D) Pairs of visible characters such as tall and dwarf. Show Answer Correct Answer: A) Long thread-like structures in the nucleus of a cell that contain hereditary information. 21. Ruby crossed a tall pea plant with white flowers and a dwarf plant with violet flowers. She performed a ..... A) Test cross. B) Dihybrid cross. C) Natural selection. D) Monohybrid cross. Show Answer Correct Answer: B) Dihybrid cross. 22. A student was trying to discover some things her hamster had learned. Which of these is a learned trait? A) Being more active during the night than during the day. B) Going to the food dish when the cage door is opened. C) Burring down in the wood shavings in the cage. D) Eating seeds, fruit, and vegetables for food. Show Answer Correct Answer: B) Going to the food dish when the cage door is opened. 23. Who is considered the 'Father of Genetics'? A) Gregor Johann Mendel. B) Charles Darwin. C) Louis Pasteur. D) Albert Einstein. Show Answer Correct Answer: A) Gregor Johann Mendel. 24. Light sensitive spots first appeared in which of these organisms A) Cockroach. B) Planaria. C) Round worm. D) Earth worm. Show Answer Correct Answer: B) Planaria. 25. Which of the following results in the speciation of organism? A) Accumulation of variations in several generations. B) Sudden accident in nature. C) Natural selection. D) All of these. Show Answer Correct Answer: D) All of these. ← 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 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 10Class 10 Science Chapter 9 Heredity And Evolution Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books