Biology for IGCSE & O level - Plant Nutrition (Section 3 - No. 18)

In the context of photosynthesis, what does 'limiting factor' mean?
A factor that completely stops photosynthesis.
A factor that is present in excess and reduces the rate.
A factor that slows down photosynthesis because it's in short supply.
A factor that has no effect on the process of photosynthesis.

Explanation

A limiting factor is a resource or condition that, if insufficient, restricts a process.

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