Review Chapter 9

Review Chapter 9 - Review Chapter 9 Short Answer 1. List...

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Review Chapter 9 Short Answer 1. List two main areas of the plant environment and define each. Atmospheric environment- above ground portion of a terrestrial plant’s environment Edaphic environment- soil and area where roots are located 2. List five abiotic atmospheric conditions that have an effect on plant growth. Light, temperature, air, moisture, wind 3. What are the effects of red/yellow light, green/blue light, high and low intensity light on plant growth. Red/yellow-promotes elongation Green/blue-inhibits elongations High intensity- shorter, darker green, brittle leaves Low intensity- tall as a result of etiolation(exaggerated growth of stem caused by indole-3 acetic acid) 4. Why does excessive water applied to roots kill plants? Oxygen in roots reduced 5. What are two benefits and two problems associated with wind. Benefits- cools and reduces moisture on plants, shorter with tougher cuticle which prevents water loss, more resistant to pathogens or insect attack Problems- can cause desiccation which accelerates senescense, physical damage due
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Review Chapter 9 - Review Chapter 9 Short Answer 1. List...

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