Which of the following best describes a colony of volvox?

A. Asexually reproduced cells held together in a mass, but independent of each other
B. Sexually reproduced cells held together in a mass, and dependent on each other
C. Single free-living acellular units irrespective of their parental origin
D. Several units of cells, held together by cytoplasmic strands and dependent on each other

Correct Answer: Option A

A. Asexually reproduced cells held together in a mass, but independent of each other