If Crayfish Are Raised in a Very Clean Aquarium That

question 33

Multiple Choice

If crayfish are raised in a very clean aquarium that only has iron filings in the floor,and they are allowed to go through several molts so that an iron filing is now serving as a statolith,what would be the effect of a large magnet suspended above the aquarium?

• A)There would be no effect at all.
• B)The crayfish would swim sideways.
• C)The crayfish would swim upside down.
• D)The crayfish would be unable to detect food.
• E)The crayfish would be blind.

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