List of top Science Questions on Microorganisms asked in CBSE Class X

What are decomposers? Explain how the decomposers (i) keep the environment clean, and also (ii) replenish the soil nutrients.

An organism which breaks down the food material outside the body and then absorbs it is:

What are decomposers? List two consequences of their absence in an ecosystem.

Select from the following the conditions responsible for the rapid spread of black mould on a slice of bread: (i) Formation of large number of spores (ii) Presence of moisture and nutrients in bread (iii) Low temperature (iv) Presence of hyphae