Brown algae use Chlorophyll types A and C, green algae use A and B. We learned about brown algae in our class before greens, so the mnemonic device I came up with is ACAB.

Question: “What photosynthetic chemicals does this phylum use?”

Me: “Ah yes, all cops are bastards!”

Anyway, sorry if this isn’t appropriate for this community, just wanted to share it.