Temperature can have a significant effect on the rate at which water is transported in a celery stalk. Higher temperatures can increase the rate of water transport, while lower temperatures can decrease it.
To investigate the effect of temperature on water transport in celery stalks, the variable that can be changed is the temperature of the water in which the celery stalk is placed. This can be done by changing the temperature of the water bath that the celery stalk is placed in.
To change the temperature, a water bath can be set up with a temperature control device such as a hot plate, a Bunsen burner, or a thermostatic water bath. The temperature can be measured using a thermometer and adjusted as necessary to achieve the desired temperature.
The celery stalk can be cut and placed in the water bath for a set period of time, such as an hour. The rate of water transport can be measured by weighing the celery stalk before and after the experiment. The difference in weight will indicate the amount of water that was transported during the experiment, and the rate of water transport can be calculated by dividing the amount of water transported by the time the celery stalk was in the water bath.
By changing the temperature of the water bath and measuring the rate of water transport, we can determine how temperature affects the rate at which water is transported in a celery stalk.