种子植物是地球植被的主宰，种子是种子植物的特有繁殖器官，是农林业重要的生产资料之一，也是人类粮食和动物饲料的主要来源，在植物种族繁衍和农林业生产中具有重要作用。大家知道，种子的形态，大小等千差万别。但是很多人不知道，根据种子的生理行为可以把种子分为不... Seed plants are the dominant vegetation on the earth. Seeds are the unique reproductive organs of seed plants. They are one of the important means of production for agriculture and forestry. They are also the main sources of human food and animal feed. They play an important role in the breeding of plants and the production of agriculture and forestry. We all know that the seed’s shape, size, etc. vary widely. But many people do not know, according to the physiological behavior of the seeds can be divided into seeds ...