This quiz works best with JavaScript enabled. Home > Science > Biology > Biological Sciences – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biological Sciences Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Why would an animal need to adapt? A) To increase the chances of survival and reproduction. B) To impress others. C) It doesn't need to adapt. D) Because the species went extinct. Show Answer Correct Answer: A) To increase the chances of survival and reproduction. 2. Apes have no..... as against monkeys. A) Tail. B) Lungs. C) Wings. D) Feet. Show Answer Correct Answer: A) Tail. 3. Why would a person want to limit their intake of sodium (salt)? A) Sodium weakens bones and teeth. B) Sodium can lead to high blood pressure. C) Sodium is linked to cancer. D) Sodium causes a person to be diabetic. Show Answer Correct Answer: B) Sodium can lead to high blood pressure. 4. What is also known as 'mechanical weathering'? A) Physical weathering. B) Chemical weathering. C) Biological weathering. D) None of above. Show Answer Correct Answer: A) Physical weathering. 5. Bio means. A) Death. B) Matter. C) Life. D) Evolution. Show Answer Correct Answer: C) Life. 6. A plant grows in a rock, which slowly breaks the rock apart. A) Physical. B) Chemical. C) Biological. D) None of above. Show Answer Correct Answer: C) Biological. 7. Plants can cause biological weathering of rocks by: A) Brushing their leaves against the rock. B) Dropping their seeds into cracks in rocks, and as the plant grows it cracks the rock even further. C) Trees lean on rocks. D) None of above. Show Answer Correct Answer: B) Dropping their seeds into cracks in rocks, and as the plant grows it cracks the rock even further. 8. Using DNA to determine which organisms are related to others is called: A) Homologous Chromosomes. B) Molecular Biology. C) Vestigial Structures. D) Pharyngeal pouches. Show Answer Correct Answer: B) Molecular Biology. 9. The weight of blue whale is upto. A) 180 tons. B) 150 tons. C) 100 tons. D) 200 tons. Show Answer Correct Answer: A) 180 tons. 10. Name the mean of making an individual immune to an infectious disease, such as smallpox, by injecting a vaccine. A) Inoculation. B) Metabolism. C) Vaccination. D) Catabolism. Show Answer Correct Answer: C) Vaccination. 11. ..... is any of several organic substances present in very small amounts in the blood and producing specific effects in the body. A) Cell. B) Hormone. C) Gland. D) Hemoglobin. Show Answer Correct Answer: B) Hormone. 12. ..... works with phosphorous in building and maintaining bones and teeth. A) Sodium. B) Zinc. C) Manganese. D) Calcium. Show Answer Correct Answer: D) Calcium. 13. The protein that transports oxygen in our blood is ..... A) Hemoglobin. B) Chitin. C) Cellulose. D) Phospholipid. Show Answer Correct Answer: A) Hemoglobin. 14. Plant kingdom consists of more than ..... species. A) 50.000. B) 10, 000. C) 100, 000. D) 80, 000. Show Answer Correct Answer: A) 50.000. 15. All amino acids contain just ..... elements. A) 4. B) 2. C) 5. D) 3. Show Answer Correct Answer: A) 4. 16. What is an advantage of sexual reproduction? A) Allows genetic variation. B) Only needs one parent. C) Happens very quickly. D) Offspring are exact copies of parent. Show Answer Correct Answer: A) Allows genetic variation. 17. Indus dolphin is found only in. A) China. B) India. C) Kashmir. D) Pakistan. Show Answer Correct Answer: D) Pakistan. 18. The fungi have on ..... and thus cannot photosynthesize. A) Leaves. B) Chlorophyll. C) Cells. D) Internal system. Show Answer Correct Answer: B) Chlorophyll. 19. Fossils that are created from minerals that replace the existing cell structure, creating a replica are A) Cast. B) Mold. C) Trace. D) Behavioral. Show Answer Correct Answer: A) Cast. 20. Oxidation causes a rock to have a red or brownish hue. A) Physical. B) Chemical. C) Biological. D) None of above. Show Answer Correct Answer: B) Chemical. ← PreviousNext →Related QuizzesScience QuizzesBiological Sciences Quiz 1Biological Sciences Quiz 2Biological Sciences Quiz 4Biological Sciences Quiz 5Biological Sciences Quiz 6Biological Sciences Quiz 7Biological Sciences Quiz 8Biological Sciences Quiz 9Biological Sciences Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books