The nitrogen fixing symbiotic organism present in Azolla is

The symbiotic association of fungi with plants is known as ____which is formed by many members of the fungal genus_____.

Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer

What are biofertilizers ? Give two examples.

A nitrogen fixing bacterium that forms a loose assocation with the roots of crop plants is

Organic farming includes

$I.$ use of biofertilisers and biopesticides

$II.$ crop rotation

$III.$ locally developed pest resistant varieties

Choose the correct option