Tags: Green Alga.
The Zygnematacae are a family of filamentous or unicellular uniseriate (unbranched) green algae. The filaments are septated and reproduction is by conjugation; Spirogyra is commonly used in schools to demonstrate this kind of reproduction. The family is notable for its diversely shaped chloroplasts such as stellate in Zygnema helical in Spirogyra and flat in Mougeotia.
