These bryophytes still carry on the old ways of early green plant evolution, they have no roots or vascular tissues and are able to reproduce both sexually and asexually. The cup-like structures on the plant surface are called gemmae cups, each containing small discs of tissue called gemmae. These gemmae are genetically identical to the parent plant and when raindrops splash and disperse them they are able to begin growing new individuals.
2022-01-04