NEET BIOLOGY

Detailed explanation-1: -Count the number of bubbles emerging from the cut end of the stems in one minute. Repeat the count five times and record your results. Calculate the average number of bubbles produced per minute. Repeat the experiment at different distances away from the light source.

Detailed explanation-2: -By actually measuring the volume of oxygen gas produced by a plant, you can work out the rate at which photosynthesis is happening. The more oxygen given off, the higher (or faster) the rate of photosynthesis.

Detailed explanation-3: -For a given light intensity, the rate of photosynthesis will be measured by measuring the volume of gas displaced in a set amount of time.

Detailed explanation-4: -Increasing the light intensity increases the rate of photosynthesis, until some other factor-a limiting factor-becomes in short supply. The rate of photosynthesis is directly proportional to the light intensity until another factor becomes limiting.

Detailed explanation-5: -These bubbles can be counted and the rate of bubbling can serve as an indication of the rate of photosynthesis. When the light intensity is increased, the rate of bubble production should increase. Decrease the light intensity and the rate of bubbling should decrease.