Question

Which of the following has polar nodule on both the ends
A) Akinetes
B) Hormogonia
C) Heterocysts
D) None of these​

Answer 1

Answer:

c is the correct answer

Explanation:

Correct option is

C

Heterocysts

Heterocysts are specialised nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc and Anabaena. They have polar nodule which is a thick wall on both the ends of the cell where it projects into the cell interior as a knob and has small pores which connect it with adjacent vegetative cells.

Thus, the correct answer is option C.