Answers

2016-01-30T09:54:54+08:00
Spirilla has a spiral shape, cocci has a circular, and bacilli has a rod-like shape
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2016-01-31T10:00:53+08:00
Bacteria are classified according to their basic shaped these are,

Spherical ( Cocci)
Rod (bacilli)
spiral (spirilla)

they can exist as a single cells, in pairs, chains or clusters.
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