A student is studying the effects of sunlight on tomato plants. She chooses 6 tomato plants, making sure that each of them receives the same amount of water and fertilizer each day. She gives one plant 0 hours of sunlight each day, with the other 5 plants receiving 1,3,5.7 and 9 hours of sunlight. At the end of the experiment, she has people try a tomato for each plant and has them rank the fruits by their sweetness. She also records the total number of leaves produced on each tomato plant.
Which variable was controlled in the experiment?
Amount of water
Hours of sunlight.
Sweetness of fruit.
Number of leaves.
1 answer
The variable that was controlled in the experiment was the amount of water. This ensures that each plant received the same base level of hydration, allowing for a more accurate comparison of the effects of sunlight on the plants.
2 answers