Three identical plants are kept under different conditions for 48 hours:
Plant A: Light + water + normal air
Plant B: Darkness + water + normal air
Plant C: Light + no water + normal air
A leaf from each plant is tested for starch.

Which result is most scientifically reasonable?

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A A has starch; B has little/no newly produced starch; C has little/no newly produced starch
B A, B and C all have exactly the same amount of starch
C A has no starch; B has the most starch; C has the most starch
D B and C have more starch than A because plants store food when stressed

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Answer: A. A has starch; B has little/no newly produced starch; C has little/no newly produced starch

Plant A has light and water, so it can photosynthesise and produce starch. Plants B and C cannot photosynthesise normally because B lacks light and C lacks water.

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Three identical plants are kept under different conditions for 48 hours: Plant A: Light + water + normal air Plant B: Darkness + water + normal air Plant C: Light + no water + normal air A leaf from each plant is tested for starch. Which result is most scientifically reasonable?

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Three identical plants are kept under different conditions for 48 hours:
Plant A: Light + water + normal air
Plant B: Darkness + water + normal air
Plant C: Light + no water + normal air
A leaf from each plant is tested for starch.

Which result is most scientifically reasonable?