Rate Of Photosynthesis (GCSE Biology)

Why are variegated (partly white) leaves useful in investigating photosynthesis and starch production?

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

If carbon dioxide concentration is the limiting factor, what will happen when you increase CO2 but keep light and temperature constant?

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

In a leaf disc photosynthesis experiment the time for leaf discs to float is recorded. What does a shorter time indicate?

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 experimental change would test the effect of CO2 concentration on rate of photosynthesis?

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

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

When light intensity is increased from low to moderate levels while CO2 and temperature remain constant, what typically happens to the rate of photosynthesis?

In investigations that measure rate of photosynthesis by counting bubbles of oxygen from pondweed, which variable is best used as the dependent variable?