Question

1. how could you measure the rate of gas production? count the leaves on the plant count the gas bubbles measure the sunlight use a scale experimental variables why? it is measured during an experiment. they think about the variables that may affect their experiment. a variable is a change in the situation, like temperature, light intensity, or color. other variables, like the type of plant or the amount of water, can be controlled in an experiment. the most important factor is the variable that is changed to measure the effect. in an experiment, only one variable should be changed at a time. model 1 - photosynthesis in an aquatic plant 1. what process occurs in an aquatic plant in model 1? 2. what gas is produced by the plant in model 1? 3. what is the source of energy for the process in model 1? 4. how does the number of gas bubbles produced per minute compare to the rate of photosynthesis? 5. why might the rate of photosynthesis in model 1 be affected by the amount of light exposure?

Explanation:

In an experiment on photosynthesis in an aquatic plant, oxygen gas is produced as a by - product. Counting the gas bubbles is a common way to measure the rate of gas production. Counting leaves doesn't measure gas production, measuring sunlight is related to a factor affecting photosynthesis but not gas production directly, and using a scale measures mass not gas production.

Answer:

count the gas bubbles