BIS2C_Lect26_Ward_Development___Sponges_ppt

Developing embryo reaches a larval stage which is

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Unformatted text preview: to sperm of their own kind”. Developing embryo reaches a larval stage which is released as a swimming ciliated larva which settles and develops into an adult sponge Sponge features: biology Sponges are often dominant organisms in marine benthic environments, and experience limited predation. Why? Sponge features: biology Sponges are often dominant organisms in marine benthic environments, and experience limited predation. Why? (1) Sponge spicules provide physical deterrent. 8 Why do sponges have limited predation? - spicules act as a physical deterrent - potent biochemical defense (biotoxins) - produces antimicrobial agents (prevents infection by microbes) - chemical repellants are used against organisms that compete for space Sponge features: biology Sponge features: biology Sponges are often dominant organisms in marine benthic environments, and experience limited predation. Why? Sponges are often dominant organisms in marine benthic environments, and experience limited predation. Why? (1) Sponge spicules provi...
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This note was uploaded on 08/07/2012 for the course BIS BIS 2C taught by Professor 3differentprofs during the Spring '09 term at UC Davis.

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