一旦花被传粉后,植物便可形成种子。在开花植物中,种子在花的子房里生长发育,子房成熟后就成为被人们所熟知的果实了。果实的大小、形状多种多样,可能是柔软、多汁的、或是坚硬、干燥的。最小的果实还不及大头针的针头大,但是最重的果实——栽培南瓜可重达超过600千克。果实在种子发育的过程中保护着它们。一旦种子成熟后,果实常会帮助它们的种子从母体植物上向远处传播。 Once the flower is pollinated, the plant can form the seed. In flowering plants, the seed grows in the ovary of the flower and the ovary becomes a well-known fruit upon maturity. The size, shape and variety of the fruit may be soft, juicy, or hard and dry. The smallest fruit is not as big as the needles, but the heaviest fruit, the cultivated pumpkin, can weigh over 600 kilos. The fruit protects them during the development of the seed. Once the seeds mature, the fruit often helps their seeds to spread far away from the parent plant.