Rate of photosynthesis

What is the relationship between light intensity and rate of photosynthesis?

As light intensity increases, the rate of photosynthesis increases, until another factor becomes limiting.

What does a limiting factor mean?

A condition that prevents the rate of photosynthesis from increasing.

Inverse square law for light intensity

Light intensity ∝ 1 ÷ (distance)².

How temperature affects rate of photosynthesis

Increases rate up to an optimum, then enzymes denature.

How carbon dioxide concentration affects photosynthesis

Increased carbon dioxide concentration increases rate up to a point.

How to measure rate of photosynthesis in lab

Count oxygen bubbles produced from pondweed or measure volume of oxygen collected.