BIOL 2004 Lecture Notes - Lecture 8: Magnoliids, Inflorescence, Monocotyledon
12 Apr 2016
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Document Summary
Many diferent ways to transport pollen grains to female parts of the lowers. Generalized flower structure: peduncle: pieces ataching lower to the rest of the plant, can bear a single lower or group of lowers (called an inlorescence) b. The number and the symmetry of flower parts. Complete lower has all of the leaves; incomplete is missing one of the leaves. Perfect lower (bisexual): has both stamens and carpels. Imperfect lower (unisexual): has either stamens or carpels. Bilaterally symmetric: more advanced families with fewer parts and fused parts; more atracive to insects. Hypogynous lower: superior ovary (above the sepals) More advanced lowers have the inferior ovary because it ofers more protecion. Perigynous lower: semi-inferior ovary (halfway below and above the sepals) Microsporophylls evolved into stamens and the megasporophylls evolved into carpels. Four main groups: basal angiosperms, magnoliids, monocots, eudicots. Classiied typically by structure of lowers, fruits, leaves and stems. Fruit is a grain and therefore indehiscent dry fruit.
