QUESTION TEXT: When soil is plowed in the spring,…
QUESTION TYPE: Most Strongly Supported
FACTS:
- When pigweed is plowed, the seeds are briefly exposed.
- Then they are put back under the darkness of
the soil. - If sunlights hits the seeds, that tells them to start growing.
- The seeds won’t grow if it hasn’t been dark for a long time, or if they don’t see the sun.
ANALYSIS: There are many possible right answers for this question. When you see a question with many facts, the best strategy is often to know them well and see how they can interact.
It’s fairly well supported that plowing causes more seeds to grow.
___________
- CORRECT. If the field is plowed at night, the seeds will never see the sun. That means they won’t get the signal to grow.
- We have no idea what happens in a field that isn’t plowed. Maybe the pigweed seeds will find a way to get to the surface if they’re left alone.
- In both cases, the seeds are plowed when it is dark. We only know what happens when seeds are plowed during daytime.
- The stimulus says that sunlight exposure triggers germination. It doesn’t say that being buried again is necessary, so the seeds might germinate even if they’re left on the surface.
- We have no idea. There could be many reasons why a seed doesn’t germinate.
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