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Micro-Organisms

Size of a typ...

Question

Size of a typical bacterium is

A

2 - 10 μ

m

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B

10 - 15 μ

m

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C

100 - 200 μ

m

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D

15 - 50 μ

m

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Solution

The correct option is A $2 - 10 μ$ m
Bacteria are prokaryotes. There is wide diversity in the shape and size of bacteria. There are 4 basic shapes of bacteria, cocci, bacilli, Spirillum and Rickettsia. Bacterial cells are very small. They are almost 10 times smaller than a plant or animal cell. The size varies from 2 to 10 μm. For example, Escherichia coli bacteria is 2 μm long.
Thus, the correct answer is '2-10 μm.'

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