Which of the following is not one of the kingdoms of organisms recognized by biolgists?

Genus is a classification of organisms and not one of the kingdoms of organisms. Among the kingdoms of organisms, monera are single cell organisms without a nucleus, protista are single cell organisms with a nucleus, fungi are multicell organisms that eat by external digestion, plantae are multicell organisms that make their own food through photosynthesis, and animalia are multicell organisms that eat meat, plants, or both.