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Unformatted text preview: the lining of the coelom, muscles, skeleton, gonads, kidneys, and most of the circulatory system in species that have these structures. Metamorphosis (met´-uh-mor´-fuh-sis) A developmental transformation that turns an animal larva into either an adult or an adult-like stage that is not yet sexually mature. Molting A process in ecdysozoans in which the exoskeleton is shed at intervals, allowing growth by the production of a larger exoskeleton. protostome development In animals, a developmental mode distinguished by the development of the mouth from the blastopore; often also characterized by spiral cleavage and by the body cavity forming when solid masses of mesoderm split. Pseudocoelomate (su´-do-se´-lo-mat) An animal whose body cavity is lined by tissue derived from mesoderm and endoderm. radial cleavage A type of embryonic development in deuterostomes in which the planes of cell division that transform the zygote into a ball of cells are either ...
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- Spring '10