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10 Cards in this Set

  • Front
  • Back
Animals are ____, they ingest food
heterotrophs
describe animals cell structure
-lack cell wall,
-are multicellular eukaryotes
-bodies held together by structual proteins called collagen
-nervous and muscle issue are unique to animals
what method do most animals reproduce by?
sexually
gastralation
is a phase early in the development of animal embryos, during which the morphology of the embryo is dramatically restructured by cell migration.
blastula
is an early stage of embryonic development in animals. It is also called blastosphere. It is produced by cleavage of a fertilized ovum and consists of a spherical layer of around 128 cells surrounding a central fluid-filled cavity called the blastocoel.
hox genes
is a DNA sequence found within genes that are involved in the regulation of development (morphogenesis) of animals, fungi and plants.
common ancestors to animals lived ___ years ago
-may have lived 1.2bil-800mil years ago
what is the closest living ancestor of animals?
choanflagelates
choanflagelates
colonial and flagellated
neoproterzoic era contained?
early members of animal fossil