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ARC-Challenge / Mercury_416576 / A euglena cell has a structure called an eyespot that detects light. A…

Problem

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question

A euglena cell has a structure called an eyespot that detects light. A paramecium does not have an eyespot, and so it cannot detect light. Why doesn't a paramecium need an eyespot?

choices

  • A paramecium does not live where there is light.
  • A paramecium does not photosynthesize its own food.
  • A paramecium lives in shallower water than a euglena.
  • A paramecium uses cilia instead of a flagellum to move.

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Source and history

Official source

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