Final answer:
Tomatoes are a poor source of iron.
Step-by-step explanation:
The food that is a poor source of iron is tomatoes. Iron is primarily found in animal products such as red meat, seafood, and organ meats, as well as plant-based sources like legumes, dried fruits, and nuts. Although tomatoes are a good source of vitamins and minerals, they are not a significant source of iron. It is important for individuals with iron-deficiency anemia to consume foods rich in iron to help increase their iron levels.