Chapter 20-Protists - Red algae - multicellular deposit...

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Chapter 20: The Diversity of 
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Used to be one Kingdom, but now they are being broken up into over 20 Kingdoms Most are unicellular , but can be colonial or multicellular Some are autotrophs and some are heterotrophs Most reproduce asexually, but many sexually 1. “Kingdoms” Protista
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Diatoms ( phytoplankton ) Dinoflagellates Green Algae ( seaweed ) Red Algae Brown Algae ( kelp ) Plant-like Protista
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Autotrophic Made of silica Used in reflectors Diatoms
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Phytoplankton account for nearly 70% of all the photosynthetic activity on Earth and are basis of marine food webs. Diatoms (cont.)
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Causes Red tide Red tide contains toxins that are deadly Dinoflagellates 
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Green algae- unicellular Red Algae- multicellular Brown algae – multicellular Also called, giant Kelp (325 feet long) and provide food, shelter, and breeding areas for marine animals. Algae - uni and multicellular
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Green algae - mostly ponds and lakes Most closely related to plants
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Unformatted text preview: Red algae - multicellular deposit calcium carbonate in their tissues - help build reefs food in Asia Carrageenan (paint, cosmetics, ice cream, toothpaste, agar) Red Algae (cont.) Protozoa Heterotrophic Examples :-Plasmodium (cause malaria) -Ciliates ( Paramecium )-Flagellates ( Trypanosoma)-Amoebas Animal-like Protista Plasmodium Protist that causes malaria Carried by the Anopheles mosquito Ciliates Example: Trypanosoma Carried by the tsetse fly Causes African Sleeping Sickness Flagellates Move by a structure called a pseudopod false foot Example: Amoeba Causes Amoebic dysentery Amoeba Water molds ( oomycetes ) and slime molds Similar to fungi Fungal-like Protista Heterotrophic - Many are decomposers Destroyed vineyards, avocado trees, potatoes....
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This note was uploaded on 05/27/2011 for the course BIO 112 taught by Professor Kirkpatrick during the Spring '11 term at Moraine Valley Community College.

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Chapter 20-Protists - Red algae - multicellular deposit...

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