This quiz works best with JavaScript enabled. Home > Agriculture > Crop Physiology > Plant Research > Crop Physiology – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Crop Physiology Quiz 3 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. 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. 3. Transpiration also occurs in what? A) Flowers. B) Stems. C) Roots. D) Leaves. Show Answer Correct Answer: B) Stems. 4. 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. 5. Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis? A) The light-independent stage (The Calvin Cycle). B) ATP formation. C) The electron transport chain. D) The light-dependent stage. Show Answer Correct Answer: A) The light-independent stage (The Calvin Cycle). 6. 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. 7. 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. 8. 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. 9. 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. 10. 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. 11. Helps fruit ripen A) Cytokinins. B) Gibberellin. C) Ethylene. D) Auxin. Show Answer Correct Answer: C) Ethylene. 12. What molecule absorbs sunlight for photosynthesis? A) Grana. B) Chloroplast. C) Thylakoid. D) Chlorophyll. Show Answer Correct Answer: D) Chlorophyll. 13. 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. 14. 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. 15. 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. 16. 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. 17. In woody plants the dermal tissue is called the A) Phloem. B) Dermal. C) Epidermis. D) Periderm. Show Answer Correct Answer: D) Periderm. 18. What part of the seed helps to protect the embryo? A) Seed coat. B) Root. C) Embryo. D) Leaves. Show Answer Correct Answer: A) Seed coat. 19. VASCULAR BUNDLE IN MONOCOTYLEDONS ARE CONSIDERED CLOSED BECAUSE ..... A) CAMBIUM IS ABSENT. B) XYLEM IS SURROUNDED ALL AROUND BY PHLOEM. C) A BUNDLE SHEATH SURROUNDS EACH BUNDLE. D) None of above. Show Answer Correct Answer: A) CAMBIUM IS ABSENT. 20. What part of the leaf is responsible for gas exchange? A) Pallisade cells. B) Spongy mesophyll. C) Cotyledon. D) Stomata and guard cells. Show Answer Correct Answer: D) Stomata and guard cells. 21. Which structure is made of mature, living, fully functioning cells? A) Companion cells of phloem. B) Vessel elements of xylem. C) Tracheid cells of phloem. D) Sieve tube cells of xylem. Show Answer Correct Answer: A) Companion cells of phloem. 22. Chlorophyll is important in plants because A) Creats an atmosphere where it can determine the osmotic presure. B) Allows the plant to make good xylem tissue. C) Make sit possible for plants to grow. D) It takes carbon dioxide and makes oxygen. Show Answer Correct Answer: D) It takes carbon dioxide and makes oxygen. 23. What occurs in the Calvin Cycle of photosynthesis? A) Energy is generated in the form of ATP. B) Glucose is synthesized from CO2. C) Nothing happens there is no energy. D) Oxygen is being converted into sugar. Show Answer Correct Answer: B) Glucose is synthesized from CO2. 24. What is photosynthesis? A) The process plants use to turn carbon dioxide and water into food. B) The process plants use to chlorophyll and sunlight into air. C) The process plants use to turn sunlight and chlorophyll into soil. D) The process plants use to turn chocolate and milk into chocolate milk. Show Answer Correct Answer: A) The process plants use to turn carbon dioxide and water into food. 25. Which process directly requires energy? A) Movement of sugar in the phloem. B) Transpiration in the leaves. C) Movement of water up the xylem. D) Absorption of minerals in the root. Show Answer Correct Answer: D) Absorption of minerals in the root. 26. What effect does citrus blight have on citrus trees. A) Kills them. B) Helps the tree produce more fruit. C) Renders a tree worthless for fruit production and kills them. D) Does stuff. Show Answer Correct Answer: C) Renders a tree worthless for fruit production and kills them. 27. The two main functions of roots are to absorb water and minerals and to ..... the plant. A) Anchor. B) Gather sunshine for. C) Protect. D) None of above. Show Answer Correct Answer: A) Anchor. 28. Which of the following is not internal factors affecting transpiration A) Number of leaves. B) Number of stomata. C) Plant cuticle. D) Temperature. Show Answer Correct Answer: D) Temperature. 29. Which structure is the main site of photosynthesis? A) Flowers. B) Stem. C) Roots. D) Leaves. Show Answer Correct Answer: D) Leaves. 30. This is plant tissue that conducts nutrients (food) through the plant. A) DNA. B) Xylem. C) Phloem. D) Photosynthesis. Show Answer Correct Answer: C) Phloem. ← PreviousNext →Related QuizzesCrop Physiology QuizzesAgriculture QuizzesCrop Physiology Quiz 1Crop Physiology Quiz 2Crop Physiology Quiz 4 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books