alternation of generations

n a division of nonflowering plants characterized by rhizoids rather than true roots and having little or no organized vascular tissue and showing alternation of generations between gamete-bearing forms and spore-bearing forms

the gamete-bearing individual or phase in the life cycle of a plant having alternation of generations

n coelenterates typically having alternation of generations

the spore-producing individual or phase in the life cycle of a plant having alternation of generations