Chapter 32 Plant Nutrition And Transport

Which soil horizon would be most affected by a flash flood? A. Top soil B. Bedrock C. Mineral layer D. None of the above {Ans: A. Top soil}The Hydrogen atoms in the organic molecules produced by a plant during photosynthesis come from _____. {Ans: Water molecules}Xylem sap that flows from the roots to the leaves contains _____ and _____. {Ans: Water Nutrients}The influx of which ion causes water to rush into the guard cells via osmosis? A. K+ B. Cl- C. Na+ D. Ca2+ {Ans: A. K+}Which of the following is not found in phloem sap? A. Sucrose B. Starch C. Amino acids D. Inorganic ions {Ans: B. Starch}True or False: Fungi and the roots of plants form a symbiotic relationship known as mycorrhiza. {Ans: True}A chemical that a plant needs in order to complete its life cycle is an _____. {Ans: Essential element}Compounds that are given to plants to promote growth are known as _____ and are of two types: _____ and _____. {Ans: Fertilizers Inorganic Organic}Plants cannot absorb _____ directly from the air; rather, they must have it converted to _____ or _____. {Ans: Nitrogen Ammonium Nitrate}True or False: