种子是一种有生命的东西,每一个种子上都有一个胚(芽子)。胚能够生根、出芽,以后长成植株,开花、结果长成新种子。一粒种子除胚占很小一部分外,其他大部分储藏着供胚生根发芽的养分,禾本科作物(如高梁、玉米、麦、稻等)称胚乳;豆科作物(如大豆、花生等)叫做子叶。 A seed is a living thing, and every seed has an embryo (bud). Embryos can root, budding, later grow into plants, flowering, the results grow into new seeds. Most of the other seeds are stored with nutrients for the germination of embryogenic roots. Gramineous crops (such as sorghum, corn, wheat, rice, etc.) are called endosperm; leguminous crops (such as soybean and peanut) Called cotyledons.