The correct answer is Scypha.

 Key Points

•  Scypha:-
  • It is a cnidarian, which is a type of invertebrate animal that includes jellyfish, corals, and anemones.
  • Protozoans are single-celled eukaryotes, while cnidarians are multicellular eukaryotes. 
  • Scypha is not a protozoan. 

  Additional Information

• Euglena:-
  • It is a genus of single-celled eukaryotes that are characterized by their photosynthetic capabilities.
  • They are found in freshwater and saltwater environments, and they have a flagellum that allows them to move.
  • Euglena are able to produce their own food through photosynthesis, but they can also ingest bacteria and other small organisms.
• Amoeba:-
  • It is a genus of single-celled eukaryotes that are known for their ability to change shape.
  • They are found in freshwater and saltwater environments, as well as in soil.
  • Amoeba move by extending and retracting their pseudopodia, which are finger-like projections of their cell membrane.
• Plasmodium:-
  • It is a genus of single-celled eukaryotes that are parasites of vertebrates.
  • They are transmitted to humans through the bite of an infected female Anopheles mosquito.
  • Plasmodium causes malaria, a disease that can be fatal if not treated.