In what ways does ulotrix reproduce?

Ulotrix is a green freshwater filamentous algae. It can reproduce in 3 ways: vegetatively – by pieces of thread; asexual method – in the warm season, any of its cells can share twice and cells with flagella – zoospores – will come out of it, which, after swimming, will find a new place, attach to it and form a new thread; sexual – before the onset of cold weather, ulotrix generates sex cells – gametes. Merging in pairs, they form a zygote – so the plant will endure unfavorable conditions.