The following is the correct food chain of an aquatic ecosystem
1
Phytoplankton → Zooplankton → Fish → Bird → Vulture
2
Phytoplankton → Fish→ Zooplankton → Bird → Vulture
3
Zooplankton → Phytoplankton → Vulture → Fish → Bird
4
Fish → Zooplankton → Phytoplankton → Bird → Vulture