Question

In single celled animals the food is takena) By the entire body surface b) Mouth c) Teeth d) Vacuoles

Answer 1

The answer is (a) By the entire body surface.

Answer 2

Its obvious that the unicellular organisms can't have teeth.

Some unicellular organisms like Amoeba use their body surface for ingestion.

However, Some unicellular organisms like Paramoecium have a so-called Mouth for ingestion.