|MadSci Network: General Biology|
I will soon begin teaching my 7th grade students the characteristics of animals. In one biology book I referenced (Biology, The Science of Life. Wallace, Robert A., Sanders, Gerald P., and Ferl, Robert J.), it said animals show "multicellularity", "most animals have well-organized organ systems", "animals are able to move", "cells and tissues are bound together" to support animals, "animals require complex nutrients", and "animals are essentially diploid with gametic life cycles....Many species reproduce asexually." I understand there are exceptions to every rule, but it seems to me that the sponges break many of them (able to move, well-organized organ systems, cells and tissues are bound together for support). How can I explain to 7th graders why they belong in the Animal Kingdom? Thanks in advance.
Re: Why are sponges classified as animals and not as a colony of protists?
Try the links in the MadSci Library for more information on General Biology. MadSci Home