EASY
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Given below is a crossword puzzle. Use hints to fill in the blank spaces with letters that complete the words.​

Across:

5. Bacteria responsible for curdling of milk.

6. Bacteria present in the root nodules of pea plant.

7. Bacteria reproduce in this way.

8. It helps in rise of bread dough.

Down:

1. Organisms that can't be seen through naked eyes.

2. Bacterial infection can be treated by.

3. An edible fungus.

4. Microorganism that cannot reproduce outside the living cell. 

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Important Questions on General Introduction and Classification of Microorganisms

EASY
Name the micro-organism used in bread-making which makes the bread-dough rise. How does it make the dough rise?
EASY
Understand the relationship and complete the following.
Example: Children: milk teeth:: Adult: Permanent teeth.
Bacteria: typhoid :: _____protozoa/virus: dysentery.