Home Biology Biological Classification Introduction and Kingdom–Monera Which of the following are characterised by …
Biology Biological Classification Introduction and Kingdom–Monera Single Correct MCQ
Published on: August 21, 2026

Which of the following are characterised by the presence of a rigid cell wall?

A
Archaebacteria
B
Eubacteria
C
Mycoplasma
D
None of these

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Text Solution

Verified by Experts
The correct answer is:
B

Eubacteria have a rigid cell wall made of peptidoglycan. Archaebacteria also have cell walls, but of a different composition (no peptidoglycan). Mycoplasma lacks a cell wall completely.

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