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Unformatted text preview: formation of roots/shoots controlled independently morphogenesis - generation of form, produces the cotyledon(s) seeds need enough nutrients to support sporophyte until it can photosynthesize o cant bury seeds to deep germination - radicle (1st root) extends through seed coat orients so that roots grow down, shoots grow up starts when seed absorbs water, metabolism resumes most seeds must stratify (spend time in cold conditions) before germinating o ensures that seed will not sprout right before cold season amyloplasts- starch-storing plastids, provides metabolic reserves for young plant cotyledon >> scutellum (food source used before endosperm) aleurone- outer layer of endosperm, signaled by gibberellic acid to produce amylase seed very susceptible to disease/drought between germination and young plant stage...
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.
- Fall '10