Home Biology Biological Classification Skill Builder Which statement is correct?
Biology Biological Classification Skill Builder Single Correct MCQ
Published on: August 12, 2026

Which statement is correct?

A
Mycoplasma is smallest and wall less living organism
B
Influenza and herpes are caused by virus having DNA and RNA
C
Nostoc and Anabaena are important decomposers
D
Methanogen are methane producing bacteria in wheat crops

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Text Solution

Verified by Experts
The correct answer is:
A

Mycoplasma are the smallest known living cells and are unique among prokaryotes because they completely lack a cell wall.

Because they lack a cell wall, they are naturally resistant to antibiotics like penicillin that target cell wall synthesis.

They are pleomorphic (can change shape) and can survive without oxygen.

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