Which of the following is not true for the green alga Spirogyra?
| 1. | Unbranched, filamentous and commonly found in stagnant fresh water bodies. |
| 2. | The filament is composed of large number of long, cylindrical cells placed one above the other in a single row. |
| 3. | The cells are characterised by long spiral ribbon-shaped chloroplasts with several pyrenoids. |
| 4. | There are multiple small vacuoles in each cell. |