Rate Of Photosynthesis (GCSE Biology)

On a graph of rate of photosynthesis against light intensity, which region could be modelled by a straight line y = mx + c?

A plant enclosed in a sealed chamber shows zero net change in CO2 concentration over 24 hours. Which statement best explains this?

Which of the following is a direct product of the light-dependent reactions that is used in the Calvin cycle (light-independent stage)?

A graph of photosynthesis rate vs light intensity shows that at very low light the curve is nearly flat near zero. What does this region represent?

When measuring oxygen volume using a gas syringe, which precaution improves accuracy?

A student uses a lamp and measures light intensity at various distances, then plots rate vs intensity. The line flattens at high intensity. Which conclusion is most valid?

Which of the following measurements would best show the effect of temperature on photosynthesis rate?

Which of the following describes a limiting factor for photosynthesis?

If a student wants to show that blue light gives a faster rate than green light using leaf discs, which control is essential?

Which color of light is usually absorbed best by chlorophyll and therefore tends to produce a higher rate of photosynthesis?

In a controlled photosynthesis experiment using pondweed, which factor should be kept constant to ensure a fair test when comparing light colours?