| 1. | Mycoplasma | 2. | Bacteriophage |
| 3. | Escherichia coli | 4. | Cyanobacteria |
The organisms which completely lack a cell wall and survive without oxygen are
1. Mycoplasma
2. Diatoms
3. Cyanobacteria
4. Dinoflagellates
| 1. | They completely lack a cell wall. |
| 2. | They are the smallest living cells known. |
| 3. | They can survive without oxygen. |
| 4. | They are unable to cause disease in animals and plants. |
PPLO like organisms is a term used for
1. Viruses
2. Viroids
3. Mycoplasma
4. Prions
The characteristic feature of eubacteria is -
| 1. | Rigid cell wall |
| 2. | Flagellum in motile ones |
| 3. | Chlorophyll a |
| 4. | all of these |