noun🔗ShareA mammal that lays eggs and has a single urogenital and digestive orifice. Only the echidnas and platypuses are included in this group"While most mammals give birth to live young, the monotreme is unique because it lays eggs, like the platypus found in Australia. "animalbiologyorganismnaturephysiologyChat with AIVocabulary GamePractice Reading
adjective🔗Share(of a pollen grain) Having a single trema, or aperture."The botanist noted the pollen grain's monotreme structure under the microscope, making it easily identifiable. "biologyplantChat with AIVocabulary GamePractice Reading
