1.)eukaryotic organism that do not have specialized tissue.
2.)an organism that invades a host to get nutrients.
3.)small reproductive cell that is protected by thick cell wall

There doesn't seem to be question asked here, so I cannot answer properly just given three options. But here is some info that may help.
Eukarya is a group of organisms that consist of eukaryotic cells Eukaryotic cells are very small, but larger than prokaryotic cells. Eukaryotic cells have larger nuclei, and more advanced organelles such as the mitochondria, golgi apparatus and smooth and rough endoplasmic reticulum. Both plant and animal cells are eukaryotes, though plant cells have the thick cell wall.