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Standard XII
Biology
Types of Archaea
Comma-shaped ...
Question
Comma-shaped bacteria are
A
Vibrio
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B
Spirillum
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C
Spirochaete
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D
Coccus
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Solution
The correct option is
A
Vibrio
Bacteria having comma-like single curve in their body are Vibrio. Examples include
Vibrio
cholerae, Vibrio vulnificus
.
Bacteria having spiral shape are called as Spirilla. Examples include
Spirillum, Campylobacter
.
They are relatively short and rigid.
Spirochaetes are bacteria that are spiral in shape. However, they are
longer and more flexible cells. Examples include
Spirochaeta
,
Leptospira
.
Bacteria that are round in shape are called as cocci. Examples include
Streptococcus pneumoniae, Staphylococcus aureus
.
Thus, the correct answer is 'Vibrio.'
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