| I: | completely lack a cell wall | 
| II: | are the smallest living cells known | 
| III: | can survive without oxygen | 
| 1. | Only I and II are true | 
| 2. | Only I and III are true | 
| 3. | Only II and III are true | 
| 4. | All I, II and III are true | 
Both Archaebacteria and Eubacteria:
| I: | have a similar structure of cell wall | 
| II: | are members of Kingdom Monera | 
 
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| 1. | These organisms are naturally resistant to antibiotics that inhibit protein biosynthesis | 
| 2. | These organisms are naturally resistant to antibiotics that target the cell wall | 
| 3. | These organisms are naturally resistant to antibiotics that inhibit DNA replication | 
| 4. | These organisms are naturally resistant to antibiotics that inhibit folic acid metabolism | 
One of the major compounds of the cell wall of most fungi is:
| 1. | peptidoglycan | 2. | cellulose | 
| 3. | hemicelluloses | 4. | chitin | 
T.O. Diener discovered a
| 1. | free infectious RNA | 2. | free infectious DNA | 
| 3. | infectious protein | 4. | bacteriophage | 
| 1. | They are most abundant bacteria in nature | 
| 2. | Many of them are important decomposers | 
| 3. | They play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulphur | 
| 4. | They are helpful in making curd from milk, production of antibiotics, fixing nitrogen in legume roots, etc. | 
| Group of protozoans | Example | ||
| A. | Amoeboid | P. | Entamoeba | 
| B. | Flagellated | Q. | Paramecium | 
| C. | Ciliated | R. | Trypanosoma | 
| D. | Sporozoan | S. | Plasmodium | 
| A | B | C | D | |
| 1. | Q | S | P | R | 
| 2. | S | Q | R | P | 
| 3. | P | R | Q | S | 
| 4. | R | P | S | Q | 
| 1. | Mycelium is unbranched and coenocytic | 
| 2. | Sex organs are absent and plasmogamy does not take place | 
| 3. | Asexual spores are not found but vegetative reproduction by fragmentation is common | 
| 4. | Basidiospores are produced endogenously on the basidium | 
| 1. | Phycomycetes | 2. | Ascomycetes | 
| 3. | Basidiomycetes | 4. | Deuteromycetes |