ひかり合成 ごうせい細菌 さいきんじゃありませんでした
hikarigōseisa ikinja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 光合成細菌

1. Was not a photosynthetic bacterium.; Was not a photosynthesizing bacteria.

Past/Perfective
Negative
Polite
Terminal Form