!!! One Medal Question !!!
http://www.thefreedictionary.com/sessile http://www.ucmp.berkeley.edu/porifera/porskel.html hope this helps..:)
@tanya123 I don't know much about sponges. I found some interesting articles which could help you answer those questions. Here they are: http://itc.gsw.edu/faculty/bcarter/paleo/labs/pro_por/porifera.htm http://phschool.com/atschool/phsciexp/active_art/structure_of_a_sponge/index.html http://www.mesa.edu.au/porifera/porifera01.asp The link which @shrutipande9 has provided is not bad either. Please, next time you have a question, post it in the "ask a question" box. It is against OS' ethics to attract users' attention by posting the "One Medal Question". Medals are used to acknowledge the helpers effort! Don't misuse it!
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