Which of the following algae contains mannitol as reserve food material?

Options

A. Gracilaria
B. Volvox
C. Ulothrix
D. Ectocarpus

Answer

D

Explanation

• Ectocarpus is a brown algae belongs to the class Phaeophyceae. Members of this class have mannitol and laminarin as stored food material.
• Gracilaria is a member of red algae (Rhodophyceae). This class is characterised by having floridean starch as stored food material.
• Ulothrix and Volvox belong to Chlorophyceae (green algae). Members of this class have starch as reserve food material.