Its not polyphyletic, its monophyletic. There are no points where members stop being animals. Many mistake Porifera (sponges) as an exception, but they are animals too.
monophyletic
The animal kingdom is considered monophyletic, meaning that all animals share a common ancestor and are descended from a single evolutionary lineage. This is supported by genetic and morphological evidence that shows the similarities in their characteristics and evolutionary history.
e. paraphyletic
The Kingdom would be: Animalia!Animalia
The Kingdom Protista is polyphyletic including members derived from 2 or more ancestral forms not common to all members & thus do not reflect phylogeny. Among several alternate classifications, a popular 8-kingdom system recognizes 3 protist kingdoms (Archaezoa, Protista & Chromista) in place of the single kingdom Protista. However, the less inclusive version of the Kingdom Protista is still polyphyletic. Using nucleic acid sequencing, systematics has begun sorting out monophyletic groups.
No, the kingdom Protista is no longer considered a legitimate taxonomic group. It is a polyphyletic group, meaning it does not include all descendants of a common ancestor. The organisms once classified in Protista have been reclassified into other kingdoms such as Plantae, Animalia, and Fungi.
Kingdom Animalia Kingdom Animalia
Kingdom: AnimaliaKingdom: AnimaliaKingdom: AnimaliaKingdom: AnimaliaKingdom: AnimaliaKingdom: Animalia
kingdom animalia
The 'Animalia' kingdom.
Echinoderms are kept under kingdom: Animalia
Cattle, as well as nearly all classifiable "animals", belong to the kingdom Animalia.