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We put the weird in weird science...

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Did you miss this passage? We know you did.

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You can hit pause and spend some quality time with it.

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Scientists discovered that a special protein, called PIN1, is found in cells adjacent to

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the SAM. PIN1 is always found nearby any cells that contain large amounts of auxin.

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Which of the following reasons would Scientist 2 give to explain why auxin is unlikely to

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be responsible for this patterning?

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And here are the potential answers...

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So what's this question asking?

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Well, it's asking us how Scientist 2 would show that auxins

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are NOT responsible for PIN1 patterning.

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Scientist 2 opens up by saying how much he doesn't like the auxin hypothesis.

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He says...

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"The problem with the auxin hypothesis is that auxin signals like a traffic signal: 

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it tells the cells when to grow and create leaves, but it doesn't tell them where to grow".

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Which option matches the reasoning in this statement?

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Well, option A is just not true, for starters.

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We know that auxin is present in the SAM because auxin allows the shoots...

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... the S part of SAM...to grow.

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What about B?

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"Auxin isn't involved in PIN1 clustering."

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Yes, well...this may or may not be true, but it's missing something.

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B is the conclusion, but it doesn't have the reasoning to go with it.

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Option C.

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"Auxin isn't directional, so it is difficult to see how it would cause PIN1 to cluster."

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Yes! This matches what Scientist 2 said about auxin not helping with directions.

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If auxin doesn't have the ability to tell the PIN1 where to grow, then it can't be responsible

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for the specific growing patterns of PIN1.

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C's our answer.

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