A specialised membranous structure in a prokaryotic cell which helps in cell wall formation, DNA replication and respiration is

(A)Cristae
(B)Endoplasmic Reticulum
(C)Mesosome
(D)Chromatophores

The NCERT line that answers it

Verbatim line

A special membranous structure is the **mesosome** which is formed by the extensions of plasma membrane into the cell.

Chapter: Cell: The Unit of Life
Section: 8.4.1 Cell Envelope and its Modifications

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that mesosome is a special membranous structure formed by plasma membrane extensions and specifically lists 'cell wall formation, DNA replication and distribution to daughter cells' and 'respiration' as its functions, which directly matches the MCQ description.

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