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10 Cards in this Set
- Front
- Back
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Animals are ____, they ingest food
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heterotrophs
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describe animals cell structure
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-lack cell wall,
-are multicellular eukaryotes -bodies held together by structual proteins called collagen -nervous and muscle issue are unique to animals |
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what method do most animals reproduce by?
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sexually
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gastralation
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is a phase early in the development of animal embryos, during which the morphology of the embryo is dramatically restructured by cell migration.
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blastula
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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.
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hox genes
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is a DNA sequence found within genes that are involved in the regulation of development (morphogenesis) of animals, fungi and plants.
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common ancestors to animals lived ___ years ago
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-may have lived 1.2bil-800mil years ago
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what is the closest living ancestor of animals?
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choanflagelates
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choanflagelates
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colonial and flagellated
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neoproterzoic era contained?
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early members of animal fossil
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