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Animals, Invertebrates, Cnidarians, Mollusks
Blastula
Blastula definition: A hollow ball of cells of an animal embryo, it develops into a gastrula.
Related Terms
Acoelomate
Bilateral Symmetry
Cephalization
Closed Circulatory System
Cnidocyte
Coelom
Deuterostome
Ectoderm
Endoderm
Endoskeleton
Exoskeleton
External Fertilization
Filter Feeder
Ganglion
Gastrovascular Cavity
Gastrula
Gill
Gizzard
Hermaphrodite
Hydrostatic Skeleton
Internal Fertilization
Invertebrate
Medusa
Mesoderm
Nematocyst
Nephridium
Nerve Net
Open Circulatory System
Polyp
Proglottid
Protostome
Pseudocoelom
Radial Symmetry
Radula
Scolex
Sessile
Siphon
Symmetry
Vertebrate
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