BIOL120 Lecture Notes - Lecture 3: Brown Algae, Xylem, Autotroph
16 Apr 2013
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Document Summary
Brown algae (kelp) phylum phaeophyta: chlorophyll a & c, carotenoids (fucoxanthin, mostly in shallow marine environments, flagellated, produce spores and gametes, sessile, have heteromorphic generations, good habitats for other animals, source of algin (paint, cosmetic products). Red algae (seaweeds) phylum rhodophyta: chlorophyll a & d, and phycobiliproteins, mostly marine, no flagellated life cycles, complex life cycles, use for production of nori, agar and carrageenan. Charales (stoneworts) form mineralized cell walls: has many similarities to plants: apical growth, phragmoplasts and cell plates during mitosis, lignin-like compound, reproductive cells are protected. ie, chlamydomonas, volvox, chara. Similarities to vascular plants: male and female reproductive structures are protected, multicellular embryo is protected within female parent, sporophyte produces spores by meiosis, have sporangia spore containing structures on sporophyte. Liverworts phylum hepatophyta: believed to be the earliest of land plants. Hornworts phylum anthocerophyta: greek keras for horn .
