Species have traditionally been characterized as "primitive " and "advanced". For example,mosses were considered to be primitive, and flowering plants advances;crocodiles were primitive and mammals were advanced.Why do most biologist today think it is incorrect to refer to any modern species as primitive?

Species have traditionally been characterized as "primitive " and "advanced". For example,mosses were considered to be primitive, and flowering plants advances;crocodiles were primitive and mammals were advanced.Why do most biologist today think it is incorrect to refer to any modern species as primitive?

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 1CT

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Species have traditionally been characterized as “primitive” and “advanced.” For example, mosses were considered to be primitive, and flowering plants advanced; crocodiles were primitive and mammals were advanced. Why do most biologists of today think it is incorrect to refer to any modern species as primitive?
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What did Darwin’s travels reveal to him about the number and variety of living species? How did tortoises and birds differ among the islands of the Galapagos? What is evolution? Why is referred to as a theory? Darwin found fossils of many organisms that were different from any living species. How would this finding has affected his understanding of life diversity?
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Evolution is the theory that species change over time. According to this theory, new species form from existing species through variation and natural selection. The evolutionary process is very slow and the transformation of one species into another requires thousands of years. Several evidences are used to prove evolution and somehow reconstruct how this process occur: 1.Fossil Records. 2.Homologous Body Structures. 3.Vestigial structures. 4.Similarity of embryo. 5.Geographical evidence
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Scientists classify living things in order to organize the astonishing diversity of life on Earth. Modern scientists base their classifications mainly on molecular similarities. They group together organisms that have similar proteins and DNA. Molecular similarities show that organisms are related. In other words, they are descendants of a common ancestor in the past. As we said earlier in our discussion, there are species that needs to be named and some are to be discovered. However, with the current environmental situation we have at the present (pollution, exploitation of resources, forest fires, and others), these species that are yet to be identified are being endangered and at the verge of extinction. As a matter of fact, the University of Turku reported last July 1, 2020 that there are 15 million estimated different species living in our planet but 2 million of them are currently known to science. Discovering these remaining species is important for them to be protected. Also,…
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