Question

Where do we come across -

1-Conchocelius stage

2-Chantransia stage

And what is common between them?

Answer 1

Conchocelius stage is the diploid sporophytic phase found in the life cycle of some red algae. It is filamentous, microscopic and variously coloured.

Chantransia is a stage found in some species of freshwater red algae. It bears gametophytes directly instead of producing tetraspores.