Biological Classification And System Of Classification Question 147
Question: Which is not help in $ N_2 $ fixation [RPMT 1999]
Options:
A) Anabaena
B) Nostoc
C) Oscillatoria
D) Rhizobium
Show Answer
Answer:
Correct Answer: C
Solution:
They lack heterocyst.
That is why, they can not take part in $ N_2 $ fixation.