Sunday, December 4, 2011

Animals

animal characteristics:
  • heterotrophic (require nitrogen and carbon for nourishment)
  • ingest food (swallow or absorb food)
  • primarly diploid (contain 2 full sets of chromosomes, one from each parent)
  • sexuall reproduction (reproduce sexually)
types of development:
  • gradual (animal is in the same state all through develpment)
  • metamorphesis (animals goes though diffrent stages or states as it develops)
There are two groups in the animal kingdom; the vertebrates and the invertebrates, an example of a vertebrate would be a dog, while an example of an invertebrate would be a jellyfish this is because jellyfish do not have a backbone while a dog does. these two groups are then further divided into; Phyla porifera, Cnideria, Platyhelminthes, Nermatoda, Annelida, Mollusca, Arthropoda and Echinodermata.

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