This quiz works best with JavaScript enabled. Home > Plant Biology > Studies > Plant Biology – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Plant Biology Quiz 48 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are the 2 MAIN groups of plants? A) Seed plants and seedless plants. B) Gymnosperms and angiosperms. C) Horsetails and ferns. D) Vascular and nonvascular. Show Answer Correct Answer: D) Vascular and nonvascular. 2. A living tree is felled or cut down at the base. Immediately after the tree has fallen, water is observed flowing up from the stump and streaming over the edge. Which theory related to translocation best describes this phenomenon? A) Capillarity theory. B) Cohesion-adhesion tension theory. C) Root pressure theory. D) Transpiration theory. Show Answer Correct Answer: C) Root pressure theory. 3. In roots, the storage cells are the ..... A) Vascular tissues. B) Cambiums. C) Cortex. D) Cuticle. Show Answer Correct Answer: C) Cortex. 4. Which of the following is not true of loading phloem sieve tubes? A) Co-transporter proteins move protons outside the cell. B) Pump proteins move protons by active transport. C) Sucrose is moved into the cell by co-transport. D) Energy in a proton gradient is used to move sucrose into the cell. Show Answer Correct Answer: A) Co-transporter proteins move protons outside the cell. 5. What is every living thing made of? A) Sugar, spice and everything nice. B) Rainbows and unicorns. C) Cells. D) Skin and bones. Show Answer Correct Answer: C) Cells. 6. Which organ contains small openings that allow for air exchange A) Xylem. B) Phloem. C) Cambium. D) Stomata. Show Answer Correct Answer: D) Stomata. 7. Name the pores through which leaves exchange gases. A) Stomata. B) Root hair. C) Holes. D) Leaf veins. Show Answer Correct Answer: A) Stomata. 8. The movment of water progressively from less negative water potential in the roots to more negative water potential in the atmosphere is mostly due to ..... A) Adhesion. B) Osmosis. C) Transpiration. D) Vessel elements. Show Answer Correct Answer: C) Transpiration. 9. What is vascular tissue in plants that transports fluid through the plant? A) Xylem. B) Phloem. C) Geotropism. D) Homeostasis. Show Answer Correct Answer: A) Xylem. 10. In which type of growth response does the plant grow in response to touch? A) Hydrotropism. B) Heliotropism. C) Geotropism. D) Thigmotropism. Show Answer Correct Answer: D) Thigmotropism. 11. What would happen if you removed the apical meristem of a root on a new plant? A) It wouldn't grow longer. B) It wouldn't grow wider. C) It wouldn't be able to perform photosynthesis. D) It wouldn't be able to get water. Show Answer Correct Answer: A) It wouldn't grow longer. 12. These are tiny bumps on the underside of the frond that house and protect the sporangia, which produce spores. * A) Dermal Tissue. B) Fruit. C) Sori. D) Carpel. E) Epidermis. Show Answer Correct Answer: C) Sori. 13. Why would increased stomatal density be beneficial to a plant? A) More carbon dioxide absorption. B) More oxygen absorption. C) More water loss. D) More sunlight absorbed. Show Answer Correct Answer: A) More carbon dioxide absorption. 14. Which of the following is the only tissue that produces new plant cells? A) Xylem. B) Meristematic tissue. C) Phloem. D) Ground tissue. Show Answer Correct Answer: B) Meristematic tissue. 15. In many plants, stomata are found only on the lower surface of the leaf. The most likely explanation for this fact is that A) Photosynthesis only occurs in the spongy mesophyll near the bottom of the leaf. B) Stomata are closer to vascular bundles that bring water into the leaf. C) Gravity plays a role in gas exchange. D) Water loss would be less on the shaded lower surface than in direct sun. Show Answer Correct Answer: D) Water loss would be less on the shaded lower surface than in direct sun. 16. Closing of stomata could most likely cause ..... A) Immediate release of spores. B) Mitosis to cease. C) Photosynthesis to cease. D) Primary growth to resume. Show Answer Correct Answer: C) Photosynthesis to cease. 17. What protects the outside of the plant and helps the plants release and/or retain water? * A) Dermal Tissue. B) Fruit. C) Sorus. D) Carpel. E) Epidermis. Show Answer Correct Answer: A) Dermal Tissue. 18. Process of water movement through a plant and its evaporation primarily from stomata on leaves but also from stems and flowers A) Transpiration. B) Stomata (stoma). C) Thigmotropism. D) None of above. Show Answer Correct Answer: A) Transpiration. 19. Name 2 harmful fungi. A) Salmonella. B) Ringworm. C) Athletes foot and ringworm. D) Flu virus. Show Answer Correct Answer: C) Athletes foot and ringworm. 20. 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. ← PreviousNext →Related QuizzesPlant Biology QuizzesPlant Biology Quiz 1Plant Biology Quiz 2Plant Biology Quiz 3Plant Biology Quiz 4Plant Biology Quiz 5Plant Biology Quiz 6Plant Biology Quiz 7Plant Biology Quiz 8Plant Biology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books