Coenobia cells under the microscope could be seen in the picture attached below. We typically see 4 to 8 cells per coenobium.
Coenobia is a colony of algae that lives and acts as a single organism. They stay together with the help of a common membrane. The cells are often held together in a jelly excreted so they can move as one individual. Coenobia may exist in a single cell, but they more often contain 4 to 8 cells per coenobium. They also may have two long spine end cells protruding from the outer corners, as per the image.
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