The stems and the leaves of the tomato plant are densely hairy. The green leaves are 4 to 10 inches long with 5 to 9 leaflets and each leaflet is 3 inches long with serrated margins. The flowers are less than 1 inch in diameter, yellow, and have 5 lobes. They appear in clusters of 3 to 12 blooms. The tomato is the fruit and is classified as a berry. The average tomato weighs about 4 ounces.