On average, an ant carries a seed only about six feet from the parent plant. However, the seed benefits by having a favorable spot in which to germinate. In addition, by being in an ant nest, the seed is less likely to be eaten by predators such as mice.
Other plants, of course, have come to rely on other seed-dispersal strategies. Winged seeds are scattered by wind and water; seeds of berry and fruit plants are sown far and wide by birds and mammals; rough, sticky seeds are spread by clinging to fur and feathers.
IN THE SKY: From David Dundee, Tellus Science Museum astronomer: The moon will be full on Tuesday. Mercury is low in the east just before sunrise. Brightly shining Venus is in the west just after dark and sets about two hours later. Mars and Saturn rise in the east around midnight. Saturn will appear near the moon on Thursday. Jupiter is in the east at dusk and will appear near the moon on Sunday.