Volvox belongs to which of the following classes of algae?

The correct option/answer is Chlorophyceae.

Here is a step-by-step educational explanation of why Volvox belongs to this class:

1. Understanding Chlorophyceae:
Chlorophyceae is a class of green algae. Members of this class are commonly referred to as green algae because their cells contain chloroplasts rich in pigments like chlorophyll a and chlorophyll b, which give them a bright green color similar to land plants.

2. Characteristics of Volvox:
Volvox is a genus of freshwater chlorophyte green algae. It exists as multicellular, spherical colonies. Each colony is composed of thousands of individual flagellated cells resembling Chlamydomonas, embedded in a gelatinous glycoprotein matrix.

3. Why it belongs to Chlorophyceae:
Volvox possesses key characteristics defining Chlorophyceae, such as:
- Presence of starch as a storage product.
- Cell walls composed of cellulose.
- Flagellated reproductive and vegetative cells.
Therefore, Volvox is classified under the class Chlorophyceae.