Seed structure

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(Top) Monocotyledon (internal structures of a corn seed with stages of germination). Nutrients are stored in the cotyledon and endosperm tissue. The radicle and hypocotyl (region between the cotyledon and radicle) give rise to the roots. The epicotyl (region above the cotyledon) gives rise to the stem and leaves and is covered by a protective sheath (coleoptile). (Bottom) Dicotyledon (internal structures of a bean seed with stages of germination). All nutrients are stored in the enlarged coty... Horticulture Education, Biology Plants, Agriculture Education, Teaching Biology, Plant Science, Flowering Plants, Science Biology, Homeschool Science, Nature Study

Cotyledon, seed leaf within the embryo of a seed. Cotyledons help supply the nutrition an embryo needs to germinate and become established as a photosynthetic seedling and may themselves be a source of nutritional reserves or may aid the embryo in metabolizing nutrition stored elsewhere in the seed.

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