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11 Cards in this Set
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Protist
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diverse collection of eukaryotic organisms; some are animal-like, plant-like, and fungus-like.
Can be single cell, or simple multi-cellular organisms that do not fit in any other kingdom. some of the oldest eukaryotic cells, 2 billion years ago |
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endosymbiosis
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smaller organism lives in larger organism; hypothesis that protists and other eukaryotes arose from ancient prokaryotes that lived in endosymbosis
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classification of protists
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is still evolving, but divided by body plan, motility, and nutrition plan
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multiple fission
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form of cell division that produces more than 2 genetically identical offspring
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conjugation
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sexual reproduction in which 2 individuals join and exchange genetic material stored in a small second nucleus. cells will then divide and produce 4 offspring which are genetically different from the parent cells.
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pseudopodia
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large, rounded cytoplasmic extensions that function both in movement and feeding, a form of amoeboid movement, using cytoplasmic streaming
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pellicle
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found on ciliates, a clear elastic layer of protein that surrounds the cell membrane. Contains funnel-like depression- the oral grove, mouth pore, anal pore, gullet
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Algae
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autotrophic protists, have chloroplasts,and produce their own carbohydrates by photosynthesis
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gametangia
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single-celled gamete chambers found in algae
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phytoplankton
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unicellular algae, free living aquatic organisms, forming the base of nearly all marine and freshwater food chains
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thallus
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plantlike body portion of a seaweed, its cells are haploid
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