大多数植物是通过种子进行传播的。不同于孢子的是,种子具有能够提供营养物质供应的完整植物胚芽。这些营养物质使胚芽生存,并在其开始生长之际为胚芽提供了生长起始点。世界上有两类种子植物:一类为球果植物及其亲缘植物,它们将种子产在特殊的鳞片中,这些鳞片包裹在一起构成了球果;另一类为显花植物,将种子产在一个称为子房的闭合小室中,而子房又是构成植株花朵的一部分。不论这些种子的发育是发生在球果中还是花朵中,它们都需要得到保护,也需要一种传播的方式。 Most plants spread through seeds. Unlike spores, the seeds have an intact plant germ that provides a supply of nutrients. These nutrients allow germ to survive and provide the germ with a starting point for growth as it begins to grow. There are two types of seed plants in the world: one is a coniferous plant and its relatives, which produce seeds in special scales that wrap together to form cones; the other is a flowering plant that seeds In a closed cell called the ovary, the ovary is part of the plant flower. Whether these seeds develop in cones or flowers, they all need to be protected and a way of spreading is needed.