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Eg phylum porifera
Sponges
Symmetry
Radial but some lack symmetry
Motility
Sedentary
Choanocytes
Inner flagellated cells
How do they feed
Suspension feeders
Inner flagellated cells
Chaonocytes
Feed on
Phytoplankton
What do choanocytes do
Sweep water through the sponges body
Amoebocytes
Supportive skeletal fibers
Amoebocytes made of
Spongin n spicules
Spongin n spicules are
Protein and mineral particles
Suspension feeders also known as
Filter feeders
Filter feeders are
Sifting through food particles
Do sponges have nerves n muscles
No
Which phylum first showed true tissue
Cnidarians
Cnidaria- phylum
Cnidarian
Cnidarian ex
Hydra jelly fish corals sea anemone
Symmetry
Radial
Types of tissues
Ectoderm and endoderm
Oldest known animal fossils
PreCambrian
Could softball the animals be the first to have arose
No
What ignited d cambrian explosion
Hard shell led to feeding, motility, protection complex predator prey relationship. Atmospheric oxygen help mobility
Difference between colonial organisms and multicellular
Multicellular organisms are extensively specialized
Define blastula
Hollow ball of cell
Define gastrula
1 side of blastula folds inwards
What is a larvae
immature individual that looks different from the adult. Larva undergoes a major change of a body form Where an adult undergoes sexual maturation
hydrostatic skeleton
In soft-bodied animals, a noncompressible fluid in the body cavity provides a rigid structure against which muscles contract, moving the animal.
Author
smaraya
ID
152425
Card Set
animal .txt
Description
reece and campbell 6th edition chp18
Updated
2012-05-19T05:47:20Z
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