- Volvox is a bi-flagellate autotroph
- Volvox is a kind of protist
- Therefore, volvox is a protist that is a bi-flagellate autotroph

Therefore, volvox is a protist that is a bi-flagellate autotroph
Which protist is a bi-flagellate autotroph?
- Volvox is a bi-flagellate autotroph 
- Volvox is a kind of protist