Nostoc is a prokaryote while rest are eukaryotes. Nuclear membrane is absent in prokaryotes.

Correct Option: D

Nostoc is a prokaryote while rest are eukaryotes. Nuclear membrane is absent in prokaryotes.

Cell membrane of E.coli, a bacteria and Chlamydomonas a unicellular green alga does not differ. As in both cell membrane is composed of lipids and proteins.

Correct Option: D

Cell membrane of E.coli, a bacteria and Chlamydomonas a unicellular green alga does not differ. As in both cell membrane is composed of lipids and proteins.

Capsule is a layer that lies outside the cell wall of bacteria. The capsule can protect cells from engulfment by eukaryotic cells, such as macrophages. They also exclude bacterial viruses and most hydrophobic toxic materials such as detergents.

Correct Option: D

Capsule is a layer that lies outside the cell wall of bacteria. The capsule can protect cells from engulfment by eukaryotic cells, such as macrophages. They also exclude bacterial viruses and most hydrophobic toxic materials such as detergents.

Glycocalyx or mucilage is the outermost coating of bacterial cells/cell wall which is rich in polysaccharides. A thick and tougher mucilage is called capsule which gives gummy or sticky trait to cells. It protects the cells from dessication, toxins and preventing attachment to foreign invaders.

Correct Option: A

Glycocalyx or mucilage is the outermost coating of bacterial cells/cell wall which is rich in polysaccharides. A thick and tougher mucilage is called capsule which gives gummy or sticky trait to cells. It protects the cells from dessication, toxins and preventing attachment to foreign invaders.

In some bacteria (e.g., Bacillus subtilis) the plasma membrane form certain invaginations or infoldings called mesosomes in the cytoplasm. The mesosomes have various functions, viz., respiratory, secretory etc.

Correct Option: D

In some bacteria (e.g., Bacillus subtilis) the plasma membrane form certain invaginations or infoldings called mesosomes in the cytoplasm. The mesosomes have various functions, viz., respiratory, secretory etc.