Name three important characteristics of animals.

Aquaculture Science
3rd Edition
ISBN:9781133558347
Author:Parker
Publisher:Parker
Chapter2: Aquatic Plants And Animals
Section: Chapter Questions
Problem 13SA
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Name three important characteristics of animals.

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Step 1Animals form a kingdom of the eukaryotic multicellular organisms.

It is divided into parazoa and eumetazoa. They evolved six hundred million years ago. There are 3 - 30 million species. It is a diverse kingdom with its members having several characters in common. They are classified based on their anatomy, morphology, genetic composition and evolutionary relationships. They have complex structures with well differentiated functions.  It includes thirty five phyla with most of them living in the sea and few in freshwater and land. They show different levels of organization like cellular, tissue and organ levels.

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