Structure of Function of Plants Review

1871 Words Mar 26th, 2013 8 Pages
Structure & Function of Plants Review: Plant Structure, Growth, and Development I 1. How does the vascular tissue system enable leaves and roots to function together in supporting growth and development of the whole plant? 2. When you eat the following, what plant structure are you consuming? Brussels sprouts, celery sticks, onions, and carrot sticks. 3. Characterize the role of each of the three tissue systems in a leaf. 4. Describe at least three specializations in plant organs and plant cells that are adaptations to life on land. 5. If humans were photoautotrophs, making food by capturing light energy for photosynthesis, how might our anatomy be different? 6. Distinguish between primary and secondary growth. 7. …show more content…
Suggest an explanation. 12. A scientist adds a water soluble inhibitor of photosynthesis to a plant’s roots, but photosynthesis is not reduced. Why? 13. Suppose an Arabidopsis mutant lacking functional aquaporins has a root mass three times greater than that of wild type plants. Suggest an explanation. 14. What are the stimuli that control the opening and closing of stomata? 15. The pathogenic fungus Fusicoccum amygdale secretes a toxin called fusicoccin that activates the plasma membrane proton pumps of plant cells and leads to uncontrolled water loss. Suggest a mechanism by which the activation of proton pumps could lead to severe wilting. 16. If you buy cut flowers, why might the florist recommend cutting the stems underwater and then transferring the flowers to a vase while the cut ends are still wet? 17. Compare and contrast the forces that move phloem sap and xylem sap over long distance. 18. Identify plant organs that are sugar sources, organs that are sugar sinks, and organs that might be either. Explain. 19. Why can xylem transport water and mineral using dead cells, whereas phloem requires living cells? 20. Apple growers in Japan sometimes make a nonlethal spiral slash around the bark of trees destined for removal after the growing season. This practice makes the apples sweeter. Why? 21. What factors influence symplastic communication? 22. How do plasmodesmata differ from gap junctions? 23.
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