Specialized cells for fixing atmospheric nitrogen in Nostoc are
A.
Akinetes
B.
Heterocysts
C.
Hormogonia
D.
Nodules
Answer :
Heterocysts
Solution :
Heterocysts are large sized, thick-walled specialised cells which occur in terminal, intercalary or lateral position in filamentous cyanobacteria, e.g., Nostoc. They have enzyme nitrogenase and are specialised to perform biological nitrogen fixation.
Releted MCQ Question on Botany >> Biological Classification
Releted Question 1
Pick up the wrong statement
A.
Protista have photosynthetic and heterotrophic modes of nutrition
In the five-kingdom system of classification, which single kingdom out of the following can include blue green algae, nitrogen-fixing bacteria and methanogenic archaebacteria?