Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?

Explanation

Let's examine each statement:1. **Paramecium and Plasmodium belong to the same kingdom as that of Penicillium:** This statement is incorrect. Paramecium and Plasmodium belong to the Kingdom Protista, while Penicillium belongs to the Kingdom Fungi. They are not in the same kingdom.2. **Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan:** This statement is partially incorrect. Lichens are composite organisms formed from the symbiotic association of an alga or cyanobacterium with a fungus, not a protozoan. Lichens are classified as mutualistic associations between a photosynthetic partner (alga or cyanobacterium) and a fungal partner.3. **Yeast used in making bread and beer is a fungus:** This statement is correct. Yeast, commonly used in baking bread and fermenting beer, is indeed a type of fungus. It belongs to the Kingdom Fungi.4. **Nostoc and Anabaena are examples of protista:** This statement is incorrect. Nostoc and Anabaena are both examples of cyanobacteria, which belong to the Kingdom Bacteria, specifically in the phylum Cyanobacteria. They are not classified as protists.In summary, the correct assignment is that **yeast used in making bread and beer is a fungus.** The other statements have inaccuracies regarding the taxonomic groups of the organisms mentioned.