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These protozoans form colonies. The large spherical colonies of Volvox globator are composed of several thousand cells around a hollow center.

Volvox

These protozoans form colonies. The large spherical colonies of Volvox globator are composed of several…

These protozoans form colonies. The large spherical colonies of Volvox globator are composed of several thousand cells around a hollow center. This is a type of reproductive cell.

Volvox

These protozoans form colonies. The large spherical colonies of Volvox globator are composed of several…

Volvox is one of the best-known chlorophytes, a division of green algae, and is the most developed in a series of genera that form spherical colonies. This mature Volvox colony is composed of numerous flagellate cells.

Volvox

Volvox is one of the best-known chlorophytes, a division of green algae, and is the most developed in…

Under certain circumstances some cells may store up food matters beome eggs, while others, known as sperm-cells, develop a flagellum. These reproductive cells separating from the colony they swim actively uniting with an egg. This union of two individuals in Vorticella results inthe power of division. The cells produced remain together, form a spere, and finally develop a Volvox colony.

Volvox

Under certain circumstances some cells may store up food matters beome eggs, while others, known as…

A reproductive cell of Volvox globator.

Volvox

A reproductive cell of Volvox globator.