This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 28 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Source or supply from which benefit is produced ..... A) Resource. B) Limiting factor. C) Boundaries. D) Mutualism. Show Answer Correct Answer: A) Resource. 2. If a snake eats a mouse that ate grain. The snake would be a A) Tertiary consumer. B) Primary consumer. C) Secondary consumer. D) Producer. Show Answer Correct Answer: C) Secondary consumer. 3. What is the function of nucleus? A) Structure that organizes motion of chromosomes. B) Structure that contains DNA and directs the cell. C) Membrane that surrounds and protects the cell. D) Stack of membranes that packages chemicals. Show Answer Correct Answer: B) Structure that contains DNA and directs the cell. 4. RNA has what base that is instead of thymine? A) Guanine. B) Adenine. C) Thymine. D) Uracil. Show Answer Correct Answer: D) Uracil. 5. What is embedded in the phospholipid bilayer? A) Proteins. B) Salt. C) Water. D) None of above. Show Answer Correct Answer: A) Proteins. 6. Who was the scientists that created the modern classification system we still use today? A) Charles Darwin. B) Carlos Linneaus. C) Isaac Newton. D) Socrates. Show Answer Correct Answer: B) Carlos Linneaus. 7. Why must radioactive CO2 be used when tracing phloem flow? A) It is incorporated into the phloem cells. B) It is incorporated into the minerals in the phloem. C) It is incorporated into the sucrose during cellular respiration. D) It is incorporated into the sucrose during photosynthesis. Show Answer Correct Answer: D) It is incorporated into the sucrose during photosynthesis. 8. Which best describes the flow of phloem? A) Root to shoot; one direction. B) Source to sink; two directions. C) Source to sink; one direction. D) Root to shoot; two directions. Show Answer Correct Answer: B) Source to sink; two directions. 9. Internal structure and organisation of living organisms. A) Anatomy. B) Biotechnology. C) Taxonomy. D) Physiology. Show Answer Correct Answer: A) Anatomy. 10. A student collects the gas given off from a plant in bright sunlight. The gas being collected is A) Oxygen. B) Carbon dioxide. C) ATP. D) Vaporized water. Show Answer Correct Answer: A) Oxygen. 11. A cell will ..... in a hypotonic solution. A) Swell and perhaps burst (lyse). B) Shrink. C) The size of the cell will not change. D) The size of the cell will change from large to small and from small to large. Show Answer Correct Answer: A) Swell and perhaps burst (lyse). 12. Identify the homogeneous group of cells which occupy the centre of each microsporangium. A) Nucellus. B) Synergid cells. C) Sporogenous tissue. D) Megaspore mother cell. Show Answer Correct Answer: C) Sporogenous tissue. 13. Plant cells develop turgor pressure when they are placed in ..... solution A) Hypertonic. B) Hypotonic. C) Isotonic. D) Mesotonic. Show Answer Correct Answer: B) Hypotonic. 14. During respiration in lungs, the exchange of gases is made by A) Trachea. B) Bronchus. C) Bronchioles. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 15. By which mechanism do greenhouse gases contribute to global warming? A) They absorb higher amounts of short wave radiation caused by increased combustion of fossilized organic matter. B) Their higher concentration absorbs more long wave radiation coming from the Sun. C) Short wave radiation emitted from the Earth's surface increases with their concentration. D) They absorb higher amounts of long wave radiation emitted from the Earth's surface as their concentration increases. Show Answer Correct Answer: D) They absorb higher amounts of long wave radiation emitted from the Earth's surface as their concentration increases. 16. Which of the chambers has the highest pressure? A) Right verticle. B) Left atrium. C) Left verticle. D) None of above. Show Answer Correct Answer: C) Left verticle. 17. Only ..... % of energy gets passed on from one trophic level to the next A) 5%. B) 10%. C) 26%. D) 90%. Show Answer Correct Answer: B) 10%. 18. Which gas will enhance the greenhouse effect if released into the atmosphere? A) Hydrogen. B) Oxide of nitrogen. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: B) Oxide of nitrogen. 19. What can be used to promote off-season flowering in long-day plants? A) Close blinds at the end of the night to delay the start of the light period. B) Interrupt the day with a period of darkness. C) Extend the cycle of light and dark to more than 24 hours. D) Turn on the lights during the night for a brief period. Show Answer Correct Answer: D) Turn on the lights during the night for a brief period. 20. What is the function of pulmonary circulation? A) To deliver blood to all parts of the body. B) To deliver blood to lungs. C) To deliver blood to all parts of the body except the lungs. D) To deliver blood to body cells. Show Answer Correct Answer: B) To deliver blood to lungs. ← 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