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Specimen
061
Pinnularia is a fresh-water algae, usually found in ponds and moist soil. They are diatoms - photosynthesising algae that have a siliceous skeleton (frustule). In girdle/band view, it is rectangular in shape, and cigar or boat shaped in valve/surface view. A large central vacuole is present with the nucleus suspended in its centre by a transverse cytoplasmic bridge. Two golden-brown chloroplasts are present along the sides of the cells. |