Examlex
Match each term related to an organ to its definition or explanation.
-outer region or layer of an organ
Deuterostomes
A major lineage of animals characterized by embryonic development where the anus forms before the mouth, including vertebrates and several other phyla.
Protostomes
A group of animals characterized by developing the mouth earlier than the anus during embryonic development, including invertebrates like mollusks and annelids.
Ecdysozoa
A group of protostome animals, including arthropods and nematodes, characterized by periodic shedding of their exoskeletons during growth.
Lophotrochozoa
A major group within the animal kingdom, which includes organisms that have either a lophophore for feeding or a trochophore larval stage in their development.
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