Question

desmond planted one tomato plant in each of nine identical pots. he planted three plants in soil that had a ph of 5.0, three plants in soil that had a ph of 6.5, and three plants in soil that had a ph of 8.0. he placed all the pots in a section of his backyard that gets direct sunlight for six hours each day. he gave each tomato plant three cups of water per day. over the course of one month, desmond counted the number of tomatoes that each plant produced. tomatoes in a garden identify the question that desmond’s experiment can best answer. is the amount of time that tomato plants live affected by soil ph levels? do plants produce more tomatoes when they are given three or six cups of water per day? do soil ph levels affect the number of tomatoes a tomato plant produces?

Explanation:

Desmond's experiment varies soil pH (5.0, 6.5, 8.0) while keeping water (3 cups/day) and sunlight (6 hours/day) constant. The question "Do soil pH levels affect the number of tomatoes a tomato plant produces?" matches the experimental setup, as it investigates the effect of soil pH (independent variable) on tomato production (dependent variable). The other questions involve time (unvaried) or water amount (constant in the experiment), so they don't align with the variables tested.

Answer:

Do soil pH levels affect the number of tomatoes a tomato plant produces?