Bio1b Summer 2008 Plants Lecture 5Eric Harris Page 1 of 2PLANTS LECTURE 5: ANGIOSPERMS II: GERMINATION & ANATOMYReading: 7th ed., 712–719, 779–780; 8th ed., 738–745, 808–809. A. Seed Morphologyi) Embryo – dicot versus monocotii) MorphologyEndosperm & cotyledonsApical meristemsPrimary tissuesEpicotyl vs. Hypocotyliii) DispersalB. Germinationi) Protection of the apical meristem – coleoptile & hypocotyl “hook”ii) Morphology & structure of seed during germinationC. Plant Anatomyi) Cell TypesParenchyma – thin-walled, alive at maturityCollenchyma – thick-walled, alive at maturitySclerenchyma – thick-walled, dead at maturityii) Tissue Types(=an integrated group of cells with a common structure, function or both)Dermal TissueEpidermis, cuticle, stomata, guard cells, trichomesVascular TissueXylem – vessels vs. tracheidsUpdated on 07/31/08Bio1b Summer 2008 Plants Lecture 5Eric Harris Page 2 of 2Phloem – sieve tube members, companion cellsGround TissuePith & cortex Updated on
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