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Biology!!

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If i do a starch test on a plant cell that comes from a plant exposed to sunlight, which parts of the plant cell will be stained blueblack?

1. nucleus
2. cell wall
3. cytoplasm
4. vacuole

I wrote the answer as 4, the vacuole, but the correct answer says 3, the cytoplasm. Shouldn't the vacuole contain the cell sap??

  • Biology!! -

    sorry! There's a mistake.

    the four choices are:

    1. nucleus
    2. cell wall
    3. chloroplast
    4. vacuole

    So which one is the correct option?

  • Biology!! -

    2.cell wall

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