السؤال 57

During a bright afternoon, what is happening inside the cells of a leaf?

Photosynthesis is running while respiration waits for the dark
Respiration is running while photosynthesis waits for a cooler hour
Photosynthesis has replaced respiration until the sun sets
Photosynthesis and respiration are running at the same timeالإجابة الصحيحة

الشرح

A leaf builds sugar and breaks sugar down in the same cells at the same moment, because the two processes are independent and neither has to wait for the other to stop. Believing that they alternate leaves no way to explain how a leaf can be releasing and consuming the same gases at once, which is exactly what a lit leaf does.

الشرح

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