MICR 2420 Lecture 6: Lecture 6_eukaryotes
12 May 2017
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Honorable mention: radiolarians: amoebas with shells (tests) made of silica, have protrusions coming out of it, when they die their shells get left behind, ocean sand particles include the remains of radiolarians. Algae: primary producers in most ecosystems, phytoplankton, can be primary and secondary symbionts, eg. Lichen is a form of symbiosis between fungi and algae: eg. The fragile cryptogrammic crust found on desert soils: do(cid:374)"t (cid:272)rush the (cid:272)rypto! Share their lineage with plants scattered light as you get deeper: the algae at that water level have adapted to have pigments that can absorb water even at that range. Frustules form some of the most beautiful forms found in nature. Store lipids such as leucocin for energy needs: have a wide variety of shapes and colours. Secondary endosymbiotic algae: 2. kelps: can have entire forests of them, most famous is sargassum weed, found in the sargasso sea, unrooted, they form floating forests that support diverse ecosystems.
