Rate Of Photosynthesis (GCSE Biology)

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

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

Which practical method is commonly used to measure the rate of photosynthesis by collecting gas?

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

Which factor directly provides the energy needed for the light-dependent reactions of photosynthesis?

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

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

Why does the rate of photosynthesis level off (plateau) at high light intensities?

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?

In an experiment the light source is a bulb of fixed power. To change light intensity at the plant you move the bulb closer or further away. Which law explains how intensity changes with distance?

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