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kingdom Animalia

kingdom Animalia intro cfhs

QuestionAnswer
Describe what animals are. They are heterotroph, multicellular, eukaryotics and have no cell walls. 95% of all animals are invertebrates.
How do animals survive? feed, respire(take in oxygen), circulation, excretion (eleminate waste), response(respond to environment-sound light etc), movement, reproduce
How are they classified? simple to complex: cells- tissue-organs-systems
Functions of a simple organism are done on the ___________ or ___________ level. cell or tissue
Complex animals have ____________tissue which forms organs and systems. specialized
At early development, life begins as a ________. zygote, (fertilized egg.)
A fertilized egg goes through a series of divisions. Name the division that is a hollow ball of cells. It has an inner layer of cells that folds inward ad differentiate into other parts Blastula
Endoderm the cells that develop into the lining of digestive tract
mesoderm the cells that develop into the middle layer for the muscles, circulatory, reproductive, excretory organ systems
Ectoderm the cells that develop into the outermost layer of skin, sense organs,and nerves
Symmetry arrangement of body parts, every animal exhibits sime type of this with the exception of sponges
Radical Symmetry equal sides in all directions, usually found in simple organisms, will nit have a 'head' region, many are sessile
Bilateral Symmetry equal in one direction, 'mirror image', found in complex animals,
anterior front/head
posterior back/tail
dorsal upper/back
ventral lower/belly
Cephalization concentration of sense organs and nerve cells at the front end of the body (usually in bilateral symmetry animals) EX. dragon fly. The more complex an animal become the more pronounce this is.
Body Cavity Formation fluid filled space between the digestive tract and the body wall. Organs are suspended and not pressed on by muscles or twisted due to body movement.
Created by: barbara2
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