Excerpt from The Invertebrata: A Manual for the Use of Students
In the great assemblage of triploblastic phyla, the backboned animals, or Vertebrata properly so-called, stand as a branch of one phylum, the Chordata. Yet their considerable numbers, the size, high organization, and intelligent activity of their members, and the fact that Man is one of them, give them an importance so great that they have always been the subject of a distinct department of zoo logical study, and were at one time regarded as a primary branch of the Animal Kingdom. That standing they have lost; but it is still necessary for many purposes to treat them apart.
The term Invertebrata is retained to cover all the non-chordate phyla and the chordates other than the Vertebrata. In that sense it is used in this book. Only the Cephalochorda which, though they are not vertebrates, have much in common with those animals, are left aside as best studied with them.
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LX-9781334715235
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Paperback. Condizione: New. Print on Demand. This book is a significant addition to the study of Protozoa, a diverse group of organisms that are not animals, plants, or fungi. The author explores the complex world of these unicellular beings, their biology, classification, and significance in various ecosystems. Unlike Metazoa, Protozoa lack cellular differentiation and multicellular structure, highlighting their unique position in the Tree of Life. Throughout the book, the author discusses essential themes and concepts related to Protozoa, such as their nutrition, respiration, locomotion, reproduction, and adaptation. The text also sheds light on the role of Protozoa as parasites and their impact on human health, agriculture, and the environment. The insights presented in this book broaden our understanding of the diversity and importance of Protozoa, making it a valuable resource for students, researchers, and anyone fascinated by the intricacies of life in its simplest forms. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781334715235_0
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