WAEC - Biology (2020 - No. 4)
The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is
Volvox
Spirogyra
Paramecium
Euglena
Explanation
Spirogyra is a filamentous charophyte green alga of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus.