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8 Cards in this Set
- Front
- Back
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coleorhiza |
Radicle has cap-like sheath called coleorhiza Monocot |
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coleoptile |
Stem tip has protective sheath Monocot |
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primary root |
Radicle starts to elongate first When it emerges from seed called primary root (taproot) |
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Secondary roots |
Secondary roots (lateral roots) develop from primary root Develop root hairs Start absorbing water |
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plumule |
Dicot seeds Radicle emerges to form primary root Hypocotyl bends as it grows Breaks surface first Begins to photosynthesize Straightens out to pull cotyledons and plumule to surface Grows and elongates
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Epigeous development |
Cotyledons end up above ground Leaves start to grow, becoming adult plant |
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Old seed never makes it to soil surface |
Hypogeous development |
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Monocot Seeds |
Radicle (enclosed in coleorhiza sheath) emerges from end of the seed to become primary root Coleoptile sheath elongates until it emerges from the soil and turns green Coleoptile sheath grows a few mm above the surface the plumule elongates spreads apart to form the first leaves
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