BIOL10001 Lecture Notes - Lecture 31: Brown Algae, Southern Australia, Caulerpa
18 Oct 2018
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Document Summary
Algae: mostly simply constructed, mostly photosynthetic, plant-like organisms and their close relatives. Marine plants can grow on other plants, can grow on animals and have animals grow on it. Generally no sophisticated tissues for transport of nutrients or storage products. Colour does not apply to what we see when we look at plants. Colour applies to the pigment that the seaweed contains. Pigment is a chemical compound which re ects only certain wavelengths of visible. Only blue is available in deep water (greater than 30m) At least 125 series of green species in southern australia. Codium over 50 species colourless internal coenocytic siphons. Can grow in soft sediments largely tropical coenocytic important contributors to sediments. Chlorophylls a and c, beta carotene, fucoxanthin and others. Chlorophyll a, alpha and beta carotenes, phycobilins and others. Filamentous reds majority basic structural form is univariate lament. Coralline reds calci ed articulated or encrusting some free living fossil record major structural components of coral reefs.
