Mycorrhiza represents
Antagonism
Endemism
Symbiosis
Parasitism
Aquatic fern which is an excellent biofertilizer
An organism used as a biofertilizer for raising soyabean crop is
Which of the following is used as biofertiliser?
$I.$ Cyanobacteria
$II.$ Yeast
$III.$ Symbiotic bacteria
$IV.$ Free living bacteria
Choose the correct option
The chemical fertilizer required for better rhizobial nitrogen fixation is
Which of the following is free living aerobic and nonphotosynthetic nitrogen fixing bacterium