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25 Cards in this Set
- Front
- Back
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seeds
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all plants don't produce seeds, only 2 groups produce seeds, Angiosperms and Gymnosperms. Seeds are dormant structures. During seed development, all seeds develop an endosperm.
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Angiosperms
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flowering seed plants, also is largest group of plants, divided into 2 groups based on seed structure
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Gymnosperms
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non-flowering seed plants
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seedcoat
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thin outer protective layer, retained by ovale wall
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cotelydon
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modified seed leaves, also transforms stored energy and provides it to the growing embryo, a plant has either 1 or 2 cotelydons
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seeds have three distinguishing features
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SeedCoat, Embryo, and Catelydons
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Monocots
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has 1 cotyledon in seed, In Monocots (like rice) the endosperm stays through dormancy and the cotyledon digests the endosperms as needed. A conversion of starch to sugar in a Monocot is called "Maltix".
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Dicot
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has 2 cotyledons, In Dicots (like beans) the cotyledons digest the endosperm before dormancy and store the energy as protein in their own tissues.
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Endosperm
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stored energy (starch) that will be used by the embryo
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What seeds go through!
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Seeds are dormant structures. During seed development, all seeds develop an endosperm. Endosperm stores energy (starch) that will be used by the embryo. Cotyledon's digest the endosperm and provide its energy to the embryo.
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Dicot-Plumule
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embryonic leaves
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Dicot-cotyl
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embryonic stem
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Dicot-radicle
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embryonic root
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Dicot-hilum
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scar that marks the former attachment of the ovule to the ovary
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Dicot-micropyle
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tiny hole for water absorbtion
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Dicot-Cotyl-Epicotyl
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stem above the attachment of the cotyl
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Dicot-Cotyl-hypocotyl
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stem below attachment of the cotyl
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Moncot-plumule and radicle
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same as dicot seed, embryonic leaves and embryonic root
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Monocot-Paricarp
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retained ovary wall, and a monocot has NO Hilum or Micropyle
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Monocot-Mesocotyl
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Embryonic stem
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Monocot-Coleoptile
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plumule shield
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Monocot-Coleorhiza
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Root shield, it protects plumule and radicle during emergence
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Monocot-scutellum
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Cotyledon
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Monocot-Endosperm
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Stored starch
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Meristems
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plant tissues responsible for plant growth by increase in cell #
-capable of mitosis -all growth by mitosis happens in Meristems -in a embryo: plumule, cotyl/mesocotyl, radicle all contain meristems |
