Heterotrophic protist + Cyanobacterium = Green algae,,,,,,,,,,,, Fungi+Cyanobacterium = Lichen,,,, Protist + Greenalgae = Euglena ,,,, Fungi + Green algae = Lichen, Oomyceta + Green algae = Plants ,,,,,,,,,, The science of chemistry began to develop, when scientists began knowing the material components (atoms and molecules). The science of biology will began to develop, when scientists will began know the animals/plants' components.