Chapter 36: Problem 14
Explain why carnivorous and parasitic plants are most common in nutrient-poor habitats.
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Chapter 36: Problem 14
Explain why carnivorous and parasitic plants are most common in nutrient-poor habitats.
These are the key concepts you need to understand to accurately answer the question.
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Why are \(\mathrm{N}, \mathrm{P}\), and \(\mathrm{K}\) considered limiting nutrients? a. They tend to be found in extremely low levels within plants. b. Their presence limits the availability of micronutrients. c. Their availability tends to limit plant growth. d. They limit the amount of cation exchange taking place in roots.
Suppose that certain root cells have an overall charge that is more negative than normal. What impact would this likely have on the uptake of anions such as \(\mathrm{NO}_{3}^{-} ?\) a. Anions would be less likely to enter roots. b. Anions would be more likely to enter roots. c. This would have no impact on the ability of anions to enter roots. d. This would make anions and cations equally likely to enter roots.
Carnivorous plants and legumes (e.g., peas, soybeans) both absorb key nutrients directly from other organisms. How is nutrient acquisition in pitcher plants similar to that in legumes? How is it different?
Your friend claims that all plants are autotrophs since they perform photosynthesis. Is that a correct statement? Explain.
Why are proton pumps in root-hair plasma membranes important? a. They pump protons into cells, generating a membrane potential (voltage). b. They allow toxins to be concentrated in vacuoles, so the toxins do not poison enzymes in the cytoplasm. c. They set up an electrochemical gradient that makes it possible for roots to absorb cations and anions. d. They set up the membrane voltage required for action potentials to occur.
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