Grade 12th passBotany

Which of the following has polar nodule on both the ends?

Akinetes

Hormogonia

Heterocysts

None of the above

Jincy Bassilia

6 Years agoGrade 12th pass

3 Answers

Arun

6 Years ago

Dear Student

Each heterocysts is connected to vegitative cell, on two sides through the prominent pores into the wall. Which latwr on one occupied by a refractive cynophycean granule called polar nodule

Vikas TU

6 Years ago

Dear student

Heterocyst and vegetative cells are symbiotically associated with each other where heterocyst provides with fixed nitrogen to the vegetative cells and vegetative cells act as the source of carbon and reductant for proper functioning of heterocyst.

RISHIKA

5 Years ago

DEAR FRIEND

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.

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