| 1. | Who among the following was successful in raising 17 germ-free chickens for 40 days? |
| a. | Pasteur |
| b. | Schottelius |
| c. | Cohendy |
| d. | Reyniers |
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Answer: (c).Cohendy
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| 2. | Within how many days after birth a stable flora develops? |
| a. | 1 day |
| b. | 7 days |
| c. | 30 days |
| d. | 7-14 days |
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Answer: (d).7-14 days
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| 3. | Animals that are contaminated with germs are said to be gnotobiotic. |
| a. | True |
| b. | False |
| c. | May be |
| d. | Can't say |
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Answer: (b).False
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| 4. | How many day old embryonated eggs was used by Reyniers to rear first germ-free animals? |
| a. | 20 |
| b. | 50 |
| c. | 2 |
| d. | 7 |
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Answer: (a).20
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| 5. | Which among the following was the first germ-free animal to be reared? |
| a. | guinea pigs |
| b. | rats |
| c. | chickens |
| d. | monkey |
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Answer: (c).chickens
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