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20 Cards in this Set
- Front
- Back
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Amniotes |
member of a clade of tetrapods that has an amniotic egg containing specialized membranes that protect the embryo. |
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Amniotic egg |
shelled egg where an embryo develops within a fluid-filled amniotic sac is nourished by yolk |
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Animals |
eukaryoti; multicellular; heterotrophic organisms that obtains nutrients through ingestion |
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arthropods |
characterized by a chitinous exoskeleton, molting, jointed appendages; inlcudes horseshoe crab, arachnids, crustaceans, and insects |
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blastula |
embronic stage that marks the end of cleavage during animal development |
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body cavity |
a fluid-filled space separating the digestive tract from the outer body wall |
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body segmentation |
subdivision of an animals´s body into a series of repeated parts called segments |
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centipedes |
carnivorous terrestrial arthropod that has one pair of long legs for each of its numerous body segments |
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chordates |
animal has dorsal nerve cord, notochord, pharyngeal slits, and post anal tail; include lancelets, tunicates, and vertebrates |
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coelom |
body cavity lined by tissue derived from mesoderm |
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complete digestive tract |
digestive tube with two openings, a mouth and anus |
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dorsal nerve cord |
one of the four hallmarks of chordates; chordate brain and spinal cord |
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ectotherms |
animal that warms itself by absorbing heat from its surroundings |
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endoskeleton |
hard interior skeleton located within soft tissues of an animal |
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endotherms |
animal that derives heat from its own metabolism |
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eutherians |
mammal whose young complete embryonic development in the uterus. nourished by blood vessels and placenta |
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evo-devo |
evolutionary developmental biology; studies evolution of developmental processes |
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exoskeleton |
hard, exterior skeleton that protects an animal and provides points of attatchment for muscles |
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gastrovascular cavity |
digestive compartment with single opening for food and waste; within jellies and hydras |
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gastrula |
embryonic stage reskulting from gastrulation in animals development. three layers: ectoderm, endoderm, and mesoderm |
