Which one of the following lists all phytoplanktons ?
1
Hydrilla, Azolla, Spirodella, Lemna, Wolffia
2
Lecane, Asplanca, Euglena, Cyclops, Brachionus
3
Pythium, Alternaria, Cladosporium, Trichoderma, Saprolegnia
4
Volvox, Microcystis, Spirulina, Zygonema, Oedogonium