DB 066 Getreidekorn / wheat grain

siehe Ton The wheat grain as a seed is fitted for reproducing the plant from which it came. The germ is an embryo plant, with a radicle which can grow into a root system and a plumule which can develop into stems, leaves and ears. The pericarp is a tough skin which protects the inner seed from soil organisms which may attack it. The inner seed coats control the intake of water by the seed. The endosperm is the food reserve on which the young plant lives until it has developed a root system.