Question

Which of the following is not used as a biofertilizer?

(A) Pseudomonas (B) Rhizobium (C) Nostoc (D) Anabaena​

Answer 1

Explanation:

pseudomonas is not used as a biofertilizer

Answer 2

$\huge\mathfrak \red{option \: - \: a}$

$\huge\fbox{pseudomonas}$