Right choice is (d) All the other protists except Slime moulds have cell wall
Explanation: Like Slime moulds, Protozoans also don’t contain cell wall. Slime moulds feed on bacteria, yeast and fungi and have amoeba like food ingestion. The pigments in Euglena are identical to that of higher plants. Slime moulds reproduce either by forming an aggregate called plasmodium or by spore formation.