Consider the following organisms: 1. Agaricus 2. Nostoc 3. Spirogyra Which of the above is/are used as biofertilizer/biofertilizers

QUESTION

Hard

Environment & Ecology

Prelims 2013

Consider the following organisms:

Agaricus
Nostoc
Spirogyra

Which of the above is/are used as biofertilizer/biofertilizers

Select an option to attempt

Explanation

Out of the three organisms listed, only 2. Nostoc is commonly used as a biofertilizer.

Agaricus This is a type of mushroom and not typically used as a biofertilizer.

Nostoc This is a filamentous, nitrogen-fixing cyanobacterium. Cyanobacteria, also known as blue-green algae, are one of the main groups of organisms used in biofertilizers due to their ability to fix atmospheric nitrogen and make it available to plants.

Spirogyra This is a green alga and not generally used as a biofertilizer.

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