what kingdom does opalina belong to?

and...
what kingdom does rockweed belong to?

http://en.wikipedia.org/wiki/Opalina

http://en.wikipedia.org/wiki/Ascophyllum_nodosum

http://en.wikipedia.org/wiki/us_vesiculosus

so they belong in the plantae kingdom or plant kingdom?

They are different from each other. read the articles, you need a different answer for each

To determine the kingdom that Opalina and Rockweed belong to, we need to consider their characteristics and classification. In biology, organisms are classified into different kingdoms based on their shared characteristics and evolutionary relationships.

Opalina is a unicellular organism belonging to the kingdom Protozoa. Protozoa is a diverse group of eukaryotic microorganisms that are typically unicellular and motile. Opalina is a genus of protozoans that possess multiple nuclei and are found in the intestines of vertebrates such as amphibians and reptiles.

On the other hand, Rockweed belongs to the kingdom Plantae. Rockweed refers to a type of seaweed or macroalgae that are commonly found attached to rocky shores or cliffs. These brown algae are multicellular organisms capable of photosynthesis. They play an important role in marine ecosystems.

In summary, Opalina belongs to the kingdom Protozoa, while Rockweed belongs to the kingdom Plantae.