Question

Symbiotic nitrogen-fixing cyanobacteria are not present in *
4 points
Azolla
Gnetum
Anthoceros
Cycas​

Answer 1

Answer:

it is B gnetum ok so please like me

Answer 2

Cyanobacteria are often called "blue-green algae", this name is convenient for talking about organisms in water that make their own food, but does not reflect any relationship between the cyanobacteria and other organisms called algae. Cyanobacteria are relatives to bacteria, not eukaryotes, and it is only the chloroplast in eukaryotic algae to which cyanobacteria are related. Some cyanobacteria are aquatic and photosynthetic, that is, they live in water, and can manufacture their own food.