27. The individual chain of cells or filament in the colony of Nostoc is known as A.Trichome B.Heterocyst C.Hormogonia D.None of the above
Answer: Option A Solution: If you look at Nostoc structure under a microscope, you will see thread-like filaments, called trichomes. Each trichome is really a chain of round or bead-like cells that lack a nucleus.
