FW110 2/8/12 Sponges Flash Cards

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- water is drawn in through
- porocytes
- water flows out top of
- osculum
- cells with beating flagella that cause water mvmt
- choanocytes
- cells that move throughout sponge body
- amebocytes
- 2 names for internal cavity
- 1. atrium
  2. spongocoel
- proper name for sponge
- phylum porifera
- what does sessile mean
- permanently attached
- what part traps food suspended in water
- choanocytes
- Archaeocytes are amoeboid cells with what 2 main functions
- 1. phagocytize (engulfing) food particles
  2. undergo differentiation to form other cells, including cells that produce spicules and gametes
- tiny pointed structures in the skeleton are
- spicules
- spicules provide what
- support and protection
- describe asconoid sponges
- simple vase-like structure, limitless in size
- describe synconoid sponges
- choanocyte layer is folded, complex body wall, more surface area
- describe leuconoid sponges
- no atrium, series of canals, the largest sponges
- what is sponge taxonomy based on
- spicules
- what are spicules composed of
- calcium carbonate
- where are sponges most diverse
- shallow water tropics
- describe hexactinellida
- glass sponges
- describe demospongiae
- >90% of sponge species are this class, skeletons are spongin fibers and siliceous spicules, all are leuconoid body form
- how much water can sponges pump
- 10,000x their size in volume of water in 1 day