An aquatic microbe that can grow only at the surface of the water is probably which of the following?

An aquatic microbe that can grow only at the surface of the water is probably which of the following?

An aquatic microbe that can grow only at the surface of the water is probably which of the following? 








A) a phototroph
B) a heterotroph
C) a chemotroph
D) a lithotroph
E) an anaerobe













Answer: A