What primary ecological consequence would result if photosynthesis ceased worldwide?
2
How do saprophytic fungi contribute to nutrient cycling in forest ecosystems?
3
Which adaptation best explains how insectivorous plants obtain nitrogen in nutrient-poor soils?
4
Why do plants store excess carbohydrates as starch rather than maintaining them as simple sugars?
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Explanation
<p>The correct answer is <strong>Starch is a stable, insoluble polymer that can be stored without affecting cell osmotic balance</strong> because turning sugars into a big, water‑insoluble chain keeps the cell from swelling with excess solutes, so the plant can stash lots of carbon safely. Imagine packing sugar cubes into a tightly‑rolled rope and tucking it away—no water can dissolve it, unlike free sugars that would draw water in like a sponge. The other choices are traps: starch isn’t needed for chlorophyll, it doesn’t take part in the light reactions, and its energy per gram is about the same as sugars, just less convenient to store.</p>
<em>Which part of the explanation helped you the most: the idea of a “rope” packing sugar, the osmotic balance point, or the trap about other options?</em>
5
In a symbiotic relationship like lichens, what is the primary benefit each partner receives?
6
Which statement accurately describes the ecological role of parasitic plants such as Cuscuta?
7
How do leguminous plants reduce the need for synthetic nitrogen fertilizers?
8
Which factor most directly limits the spread of insectivorous plants in nutrient‑rich environments?
9
What is the main reason plants do not require a digestive system like animals?
10
If a forest loses its fungal decomposer community, which immediate effect on the ecosystem is most likely?
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