BIOL 104 Lecture Notes - Lecture 1: Adventitiousness, Eudicots, Monocotyledon
9 Mar 2020
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Hypogeous germination is particularly common in monocots such as corn. Identify: plumules are the first true leaves, epicotyl is the stem above the cotyledons, the hypocotyl is the stem below the cotyledons, the radicle is the embryonic root, cotyledons, bean seed (#1-phaseolus seed xs, cross section) In the seedling stage, cotyledons serves as the first true leaves: eudicots have broad leaves with netted venation and a root system that retains its primary and secondary leaves. Identify: coleoptile, shoot apex, and root apices, hypoctyl, coleorhiza, and cotyledon, primary, secondary, and adventitious roots. In monocots the fibrous root system arises from the adventitious roots. Monocots generally have narrow leaves with parallel veins and a fibrous root system that has arisen from adventitious roots. Exercise 5: compare the differences between the eudicot and monocot seeds and seedlings and note addition differences in figure 1-2.
