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Lecture 10

BIOL 101 Lecture 10: Ch 27 bio

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BIOL 101

The Plant Kingdom: the land plant clade Part 1: seedless land Plants Review question: Which groups belong with the land plants in the plants in the broad sense? Red and green algae Plants: in the broad sense Monophyletic group including (KNOWN AS ARCHAEPLASTIDS) Red algae Green algae Land Plants Based on Molecular data Presence of chloroplasts from PRIMARY endosymbiosis Primary Endosymbiosis: bounded by 1 inner and 1 outer membrane Plants in the narrow sense: Land plants Land plants= embryophytes EX: liverworts, mosses, hornworts, vascular plants Some green algae are closer related to plants than they are to other green algae Diagnostic characters of land plants: Multicellular eukaryote (common sense) Photosynthesisnonfunctioning chloroplasts If not photosynthetic they lost that trait years ago but still have chloroplasts Cell wall made of cellulose Embryo protected within mother plants If not protected it would dry up (it is held onto unlike in green algae) Alternation of generations Distinguishes from fungi, protists, and algae 14 occur in green algae 5 is synapomorphy of land plants Colonization of land by plants: Required anatomical, physiological, and reproductive adaptations including:
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