1. After a hurricane, many coastal plants die even when they don’t show any structural damage. This happens in areas where storm surge dumps salt water into the soil where those plants are growing. How does salt water kill a plant? Base your explanation in water potentials.2. Why can xylem transport be carried out by dead cells while phloem transport is carried out by living cells?3. Explain how plants without a heart, can pump water up sometimes hundreds of feet above ground. Base your explanation in the characteristics of water molecules and water potentials.4. Explain the pressure-flow model for phloem transport.5. A) Explain two (2) alternative ways in which plants can obtain nutrients when they live in nutrient-poor soils. B) Explain the effect of rising CO2 levels on plant physiology and nutrition.6. If you are hungry, you go find food, if you are thirsty you look for water, if you are in danger, you run. But how can plants find food, and nutrients and avoid harm if they can’t move?
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