Major Animal Phyla in Sea, Evolution

Major Animal Phyla in Sea, Evolution - Major Animal Phyla...

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Major Animal Phyla in Sea, Evolution I’m in the hot zone. Know the major animal phyla in the sea Protozoa – single cells Porifera – sponges Coelenterata – Hydra Platyhelminthes – flatworms Nemathelminthes – round worms Annelida – segmented worms Bryozoa – animals Mollusca – snails Anrthropoda – crabs Echinodermata – starfish, sea urchins, sea cucmbers, crinoids Chordata – salps, tunicates Subphylum Vertebratea Class- Fishes Amphibia Reptiles Birds Mammals First came from bilateral flatworms Chordates have cartilage backbones With sexual reproduction there is a huge variety Blue whale is the largest animal to ever live on the planet Evolution: Change in the genetic make-up of a population of individuals that leads to a new species Mule’s aren’t species, they’re dead-enders, but once in a while, if two species meet, you get a fertile offspring Whale + Doplhin = Whalfin Five processes that determine evolution 1. Over production Producing more of your own kind than is needed, or can survive
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This note was uploaded on 04/10/2008 for the course OCN 201 taught by Professor Mottl during the Fall '06 term at Hawaii.

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Major Animal Phyla in Sea, Evolution - Major Animal Phyla...

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