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21 Cards in this Set
- Front
- Back
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Intercalary Mersitem |
those between differentiated tissues |
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Lateral Meristem |
Expand the breadth or diameter of an organ. Ex. vascular cambium: specialized lateral meristem from which secondary xylem and phloem are derived |
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Apical Meristem |
Generate new cells in the tip of roots and shoots, resulting in increased height or length |
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Coleorhiza |
Roots Sheath that encloses the primary root |
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Mesocotyl |
Roots Underground stem, elongates to help coleoptile up through soil |
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Ligule |
Leaves Modified extension of the sheath |
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Auricles |
Leaves Short, claw-like appendages at base of leaf |
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Awn |
Leaves Bristle arising from a spikelet part |
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Phyllochron |
Leaves Time b/w emergence of 1 leaf and the next |
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Plastochron |
Leaves Time of the emergence of two leaf primordia |
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Lemma |
lower of the two bracts enclosing the grass flower Lemma + palea = floret |
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Palea |
Upper and inner bract of the grass floret which encloses the grass flower |
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Caryopsis |
single-seeded fruit, formed from carpel, no special method of opening (indehiscent) |
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Scutelum/cotyldon |
Part of the embryo which functions as a storage, digestive, and absorbing organ |
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Endosperm |
Tissue produced from triple nuclear fusion b/w one sperm nucleus and two maternal nuclei. 2 tissues: aleurone and starchy endosperm |
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Aleurone |
Outermost layer of endosperm |
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Pericarp |
Surrounds entire seed |
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Testa/seed coat |
derived from nucellus, impermeable |
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Coleoptile |
Protective sheath around emerging shoot as it grows to surface |
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Bran |
Pericarp + aleurone |
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Spikelet |
2 glumes and 1+ florets on a rachilla |
