noun🔗ShareA mammal that lays eggs and has a single urogenital and digestive orifice. Only the echidnas and platypuses are included in this group"In their biology class, the students learned that monotremes, such as echidnas and platypuses, are unique mammals because they lay eggs instead of giving birth to live young. "animalbiologyorganismnatureChat with AIVocabulary GamePractice Reading
