Final answer:
The tomato plant is 11 inches above the ground.
Step-by-step explanation:
To find the height of the tomato plant above the ground, we need to subtract the depth at which the seed was planted from the total height of the plant. In this case, the seed was planted 1 inch below the ground and the plant has grown a total of 12 inches.
So, we subtract 1 inch from 12 inches
Total height of plant - Depth seed was planted = Height of plant above ground
12 inches - 1 inch = 11 inches
Therefore, the tomato plant is 11 inches above the ground.