diagram of spirogyra
SpirogyraSpirogyra is a green alga found on the surface of ponds and slow moving rivers and streams.Vegetative structureIt is a multicellular alga of very simple structure, consisting of an unbranched filament in which each cell is identical. There is no division of labour i.e. there is no differentiation.All the cells are haploid.The cells are cylindrical. Each cell has a cell wall surrounded by mucilage.Each cell has a chloroplast which is wound spirally just inside the cell wall.A vacuole fills the central region of the cell and the nucleus is suspended in the cell vacuole by threads of cytoplasm
