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Protists are a paraphyletic group because animals, fungi, and plants are the crown groups evolved from different lineages of the protists. They aren't included in the same group as protists taxonomically. This explains why the cladists consider the protist a paraphyletic group.
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A taxon such as the class reptilia which does not include its relatives the birds is... a. really an order b. a clade c. monophyletic d. polyphyletic e. paraphyletic?
e. paraphyletic
Which of the following statements is consistent with the assertion that protists are paraphyletic?
The statement "Protists are a diverse group of eukaryotic organisms that do not fit neatly into the plant, animal, or fungi kingdoms" is consistent with the idea that protists are paraphyletic. This is because protists traditionally grouped together organisms that are not closely related in terms of evolutionary history.
How might the classification of protists change in the future?
New classifications of protists are attempting to present monophyletic groups based on structure, biochemistry and genetics.
What are the kingdom schemes and examples of each?
The three main kingdom schemes are Monophyletic (includes all descendants from a common ancestor, like Mammals), Paraphyletic (includes the common ancestor but not all descendants, like Reptiles), and Polyphyletic (does not include the common ancestor, like Invertebrates). Each scheme groups organisms based on evolutionary relationships.
Are fish monophyletic?
No, fish are not monophyletic. The term "fish" is a paraphyletic group because it includes some but not all descendants of a common ancestor. It does not include tetrapods (four-limbed vertebrates such as amphibians, reptiles, birds, and mammals) which share a more recent common ancestor with some fish species.
