Bean seed


Bean seed




This model demonstrates the structure of a bean seed. The seed is a special multicellular structure of a complex structure that serves for the reproduction and dispersal of seed plants, usually developing after fertilization from the ovule (modified female sporangium) and containing the embryo. The seed develops on the surface of the seed scale. It is a multicellular structure that unites storage tissue - endosperm, embryo and a special protective cover (seed coat). Before fertilization, there is a nucellus in the central part of the ovule, which is gradually displaced by the endosperm. The endosperm is haploid and is formed from the tissues of the female gametophyte.