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Unformatted text preview: ANIMAL DIVERSIY CHAPTER 29 BODY PLAN- the basic structure and functional design of the body CLEAVAGE- series of mitotic divisions undergone by the zygote BLASTULA- the conversion of the zygote into a hollow ball of cells during cleavage GASTRULATION- a process of forming and segregating specific layers of tissue, (i.e. germ layers) LARVA- a sexually immature form that may look very different from the adult METAMORPHOSIS- a developmental process that converts immature animal into juvenile form that can then grow into an adult OPISTHOKONTS- group characterized by a posterior flagellum on motile cells EDIACARAN FOSSILS- earliest known fossils from about 600 mya to 542 mya consisting of small, simple animals CAMBRIAN RADIATION- the rapid appearance of body plans during 525 mya to 515 mya. EVO DEVO- also known as evolutionary development- form of approach to study relationships SYMMETRY- arrangement of the body structures in relation to the body axis RADIAL SYMMETRY- the body has the general form of a wheel or cylinder, similar structures arranged as spokes from a...
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