Identify the A, B, C, D and E in the following diagram

Options

A. A – Cell membrane, B – Cell wall, C – DNA, D – Heterocyst, E – Mucilagenous sheath
B. A – Mucilagenous sheath, B – Cell membrane, C – DNA, D – Heterocyst, E - Cell wall
C. A – Cell wall, B – Cell membrane, C – DNA, D – Heterocyst, E – Mucilagenous sheath
D. A – Cell wall, B – Cell membrane, C – Heterocyst, D – DNA, E – Mucilagenous sheath

Answer

C

Explanation

Diagram A explain about cell division of bacteria by binary fission.
A – Bacteria is surrounded by cell wall made up of peptidoglycan.
B – Below cell wall is cell membrane (double membrane). In gram +ve bacteria outer membrane is present.
C – Double stranded circular DNA molecule. Diagram B represent blue green algae – Nostoc.
D – Heterocyst responsible for `N_(2)` fixation.
E – Mucilagenous sheath.