**Porifera means 'pore bearer' and are essentially sponges.
1. Feeding - herbivore, carnivore, omnivore, filter feeders, detrivore,
parasites
=> Filter feeders which means they filter food out of water. (intracellular digestion: digestion takes place inside the cytoplasm of the sponge.)
2. Respiration - take in O2 and release CO2
=> No respiratory system, everything is done by diffusion within individual cells.
3. Circulation -
transport of nutrients, O2 etc. through body
4. Excretion - expelling
nitrogenous waste products (ammonia - urea)
5. Response - senses,
nerves
6. Movement - muscles/skeleton
7. Reproduction - sexual and
cloning, life cycles
Reference:
http://library.thinkquest.org/28751/review/animals/1.html
No comments:
Post a Comment