Biological Classification

1: (c) Anabena, 2: (a) Anabena, 3: (b) They cannot swim against current, 4: (a) Entamoeba histolytica, 5: (b) Trypanosoma, 6: (c) Ciliated, 7: (d) Sporozoan, 8: (a) Sleeping sickness, 9: (c) Chitin and polysaccharide, 10: (d) Some are autotrophs