This quiz works best with JavaScript enabled. Home > Crop Physiology > Plant Research > Crop Physiology – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Crop Physiology Quiz 4 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Citrus growers and the U.S. Horticultural Research Laboratory have been studying the disease citrus blight since what year? A) 1891. B) 1872. C) 1895. D) 1892. Show Answer Correct Answer: D) 1892. 2. YOU ARE GIVEN A FAIRLY ONLY PIECE OF DICOT STEM AND A DICOT ROOT. WHICH OF THE FOLLOWING ANATOMICAL STRUCTURE WILL YOU USE TO DISTINGUISH BETWEEN THE TWO? A) SECONDARY XYLEM / PHLOEM. B) PROTOXYLEM. C) CORTICAL CELLS. D) None of above. Show Answer Correct Answer: B) PROTOXYLEM. 3. In what process does the plant give up water vapor to the atmosphere? A) Photosynthesis. B) Transpiration. C) Respiration. D) None of above. Show Answer Correct Answer: B) Transpiration. 4. Transpiration also occurs in what? A) Flowers. B) Roots. C) Stems. D) Leaves. Show Answer Correct Answer: C) Stems. 5. The rate at which photosynthesis is carried out depends on A) The amount of fertilizer in the water. B) The amount of oxygen in the atmostphere. C) The light intensity, gtemperature, and concentration of carbon dioxide. D) The amount of respiration carried on durring the daylight hours. Show Answer Correct Answer: C) The light intensity, gtemperature, and concentration of carbon dioxide. 6. Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis? A) The light-dependent stage. B) The light-independent stage (The Calvin Cycle). C) The electron transport chain. D) ATP formation. Show Answer Correct Answer: B) The light-independent stage (The Calvin Cycle). 7. What two materials are needed for photosynthesis? A) Water and soil. B) Carbon dioxide and water. C) Carbon dioxide and chlorophyll. D) Peanut butter and jelly. Show Answer Correct Answer: B) Carbon dioxide and water. 8. Which layer of cells in the leaf conducts the majority of photosynthesis? A) Root cells. B) Pallisade. C) Spongy mesophyll. D) Guard cells. Show Answer Correct Answer: B) Pallisade. 9. AGE OF A TREE CAN BE ESTIMATED BY A) ITS HEIGHT AND GIRTH. B) BIOMASS. C) NUMBER OF ANNUAL RINGS. D) None of above. Show Answer Correct Answer: C) NUMBER OF ANNUAL RINGS. 10. How does Photosystem II create O2? A) It reduces H2O into H+ and O. B) O2 is actually generated in the Calvin Cycle. C) It Oxidizes H2O into H+ and O. D) Oxygen atoms are assembled in Photosystem II. Show Answer Correct Answer: C) It Oxidizes H2O into H+ and O. 11. Xylem tissue is composed of which two types of cells A) Xylem vessels and companion cells. B) Xylem vessels and sieve tubes. C) Tracheids and sieve tubes. D) Xylem vessels and tracheids. Show Answer Correct Answer: D) Xylem vessels and tracheids. 12. Chloroplasts A) Essential to the process. B) Small membrane bound bodies inside the cell that contain the green chlorophyll pigment. C) Most important life-sustaining process. D) All living cells carry on the process of repiration. Show Answer Correct Answer: B) Small membrane bound bodies inside the cell that contain the green chlorophyll pigment. 13. Helps fruit ripen A) Auxin. B) Gibberellin. C) Cytokinins. D) Ethylene. Show Answer Correct Answer: D) Ethylene. 14. What molecule absorbs sunlight for photosynthesis? A) Chloroplast. B) Thylakoid. C) Grana. D) Chlorophyll. Show Answer Correct Answer: D) Chlorophyll. 15. What's the temperature range of photosynthesis? A) 60-80. B) 70-80. C) 65-85. D) 75-85. Show Answer Correct Answer: C) 65-85. 16. Removing the apical bud of a plant will ..... A) Stop all further growth. B) Promote the production of new axillary buds, making the plant bushier. C) Make it grow taller, faster. D) Prevent the plant from getting thicker, making it floppy. Show Answer Correct Answer: B) Promote the production of new axillary buds, making the plant bushier. 17. Transpiration A) Process by which a plant gives up water vapor to the atmosphere. B) A series of processes in which solar energy is converted to chemical energy. C) Process by which living cells take in oxygen and give off Carbon Dioxide. D) Study of how these organs function and the complex chemical processes that permit the plant to live, grow and reproduce. Show Answer Correct Answer: A) Process by which a plant gives up water vapor to the atmosphere. 18. Transporting sugar from the leaf down to the roots is done by the ..... A) Xylem. B) Phloem. C) Cotyledon. D) Pallisade cells. Show Answer Correct Answer: B) Phloem. 19. Plant Physiologists are responsible for studying and researching what? A) Process of plant development. B) How respiration works. C) Process of plant growth and development. D) How photosynthesis works. Show Answer Correct Answer: C) Process of plant growth and development. 20. In woody plants the dermal tissue is called the A) Dermal. B) Periderm. C) Epidermis. D) Phloem. Show Answer Correct Answer: B) Periderm. ← PreviousNext →Related QuizzesCrop Physiology QuizzesCrop Physiology Quiz 1Crop Physiology Quiz 2Crop Physiology Quiz 3Crop Physiology Quiz 5Crop Physiology Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books