Which of the following pairs is wrongly matched?</h2></div>

Large holes in Swiss cheese are formed due to production of a large amount of <span class="katex"><sp…

The following diagram represents ________

Which of the following is an aerobic nitrogen-fixing bacterium?

Biofertiliser for Soya bean crop is</h2></div>

Presence of which of the following elements is required for nitrogen fixation?

Define: Biofertiliser</h2></div>

How many of the following organisms can be used as biofertilizers?<br> Azolla, Thiobacillus, Frankia, Glomus, Pseu…