A) It is prokaryotic.
B) It is autotrophic.
C) It is filamentous,
D) It is macroscopic.
Correct Answer: D
Solution :
: Nostoc is a cyanobacterium or blue green microscopic, filamentous alga which perform oxygenic photosynthesis due to the presence of photosynthetic pigments - chlorophyll a carotenoids and phycobilins. The trachomas (filaments covered by mucilagenous sheath) of Nostoc are uniseriate (made up of single row of cells) and heterocystous (having heterocystefa nitrogen fixation). The cells of trichome shown typical prokaryotic organization having naked DNA, peptidoglycan cell wall, 70 S ribosomes absence of membrane bound cell organellcs.
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