This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Thin stalk that connects the blade of the leaf to the plant's stem A) Blade. B) Cuticle. C) Petiole. D) Epidermis. Show Answer Correct Answer: C) Petiole. 2. What will most likely happen if the human population continues to grow at current rates? A) There will be fewer natural resources available for future generations. B) There will be an incresae in nitrogen levels in the atmosphere. C) There will be a decrease in water pollution. D) There will be an increase in the number of strong hurricanes. Show Answer Correct Answer: A) There will be fewer natural resources available for future generations. 3. Which group to these belong to? sea star, brittle star, sea cucumber, sea urchin A) Echinoderms. B) Sponges. C) Fish. D) Mollusks. Show Answer Correct Answer: A) Echinoderms. 4. Where are free nucleotides added to a newly growing strand? A) To the 5'OH group of the previous deoxyribose sugar. B) To the 5'OH group of the previous phosphate group. C) To the 3'OH group of the previous deoxyribose sugar. D) To the 3'OH group of the previous phosphate group. Show Answer Correct Answer: C) To the 3'OH group of the previous deoxyribose sugar. 5. What happens in the lysogenic cycle? A) A virus injects DNA into a host cell. B) Bacteria injects genetic material into a host cell. C) Bacteria injects DNA into a host cell. D) A virus injects its genetic material into a host cell. Show Answer Correct Answer: D) A virus injects its genetic material into a host cell. 6. Which of the following is a Red alga? A) Chara. B) Laminaria. C) Fucus. D) Polysiphonia. Show Answer Correct Answer: D) Polysiphonia. 7. What is photosynthesis? A) Water loss by a plant. B) When a photographer takes a photo. C) To get your pictures from the photo lab. D) The process in which plants make their food. Show Answer Correct Answer: D) The process in which plants make their food. 8. Which of the following is the smallest unit of life that can carry out all life functions? A) The mitochondria. B) The vacuoles. C) The nucleus. D) The cell. Show Answer Correct Answer: D) The cell. 9. Which carries water and minerals from roots to other parts of the plant? A) Xylem. B) Phloem. C) Stoma. D) Guard cell. Show Answer Correct Answer: A) Xylem. 10. Who first proposed binomial nomenclature as a way of classifying organisms? A) Carl Linnaeus. B) Carl's Jr. C) Charles Darwin. D) Henry Groseclose. Show Answer Correct Answer: A) Carl Linnaeus. 11. Carnations can be induced to flower in the winter by: A) Keeping daylight short in a greenhouse. B) Keeping daylight long in a greenhouse. C) Inhibiting the amount of Pr. D) Inhibiting the hormone auxin. Show Answer Correct Answer: B) Keeping daylight long in a greenhouse. 12. Which force directly causes water molecules to stick to the xylem wall? A) Tension. B) Cohesion. C) Adhesion. D) Gravity. Show Answer Correct Answer: C) Adhesion. 13. What is the reason for Okazaki fragments being formed during DNA replication? A) To enable replication of the 3' $\rightarrow$ 5' (lagging) strand. B) To form the template for the RNA primers. C) To initiate replication on the 5' $\rightarrow$ 3' (leading) strand. D) To help the DNA helicase unwinding the DNA helix. Show Answer Correct Answer: A) To enable replication of the 3' $\rightarrow$ 5' (lagging) strand. 14. I am an ichthyologist. What do I study? A) Humans. B) Fish. C) Fungi. D) Ducks. Show Answer Correct Answer: B) Fish. 15. If a scientist is studying the methods of inserting human insulin gene in bacteria, which branch of biology may this be? A) Pharmacology. B) Biotechnology. C) Physiology. D) Anatomy. Show Answer Correct Answer: B) Biotechnology. 16. During which phase of the cell cycle is the cell growing and preparing for cellular division? A) Cytokinesis. B) Anaphase. C) Prophase. D) Interphase. Show Answer Correct Answer: D) Interphase. 17. Lots of chloroplasts, cylindrical cells, close together A) Spongy mesophyll. B) Palisade mesophyll. C) Xylem. D) Root hair cell. Show Answer Correct Answer: B) Palisade mesophyll. 18. In flowering plants, which of the following helps seed dispersal? A) Bees. B) Pollens. C) Mammals. D) Germination. Show Answer Correct Answer: C) Mammals. 19. What happens to the transpiration rate as light intensity increases? A) It increases. B) It stays the same. C) It decreases. D) None of above. Show Answer Correct Answer: A) It increases. 20. Which one of these is Not a characteristic of a hypothesis? A) Must be correct. B) Must be consistent with all available data. C) Must be testable. D) Must make predictions. Show Answer Correct Answer: A) Must be correct. ← PreviousNext →Related QuizzesScience QuizzesBiology Quiz 1Biology Quiz 2Biology Quiz 3Biology Quiz 4Biology Quiz 5Biology Quiz 6Biology Quiz 7Biology Quiz 8Biology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books