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What did Leeuwenhoek observe in a drop of pond water?
_________ are the agents that act as carriers of a pathogen and spread diseases.
Which one of the following is not a method of food preservation?
The microorganism which helps in fermentation is :
Agents in infectious diseases responsible are called
A plant disease called citrus canker is caused by a _________ .
165 videos|447 docs|327 tests
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165 videos|447 docs|327 tests
|