-
nounmulticellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system
Similar:
type of:
Definition that contains metazoa
- caspase-mediated cell death a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival
- parazoa multicellular organisms having less-specialized cells than in the Metazoa; comprises the single phylum Porifera
- metazoan any animal of the subkingdom Metazoa; all animals except protozoans and sponges
- programmed cell death a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival
- apoptosis a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival
- subkingdom parazoa multicellular organisms having less-specialized cells than in the Metazoa; comprises the single phylum Porifera