What are symbiotic relationships?
Symbiotic relationships are long-term relationship between two different species “living together”.
The relationship varies in population, it can be mutualism, commensalism & parasitism.
Mutualism:
Each population benefits. The interaction is necessary for the survival and growth of each species.
Commensalism:
One population benefits, the other is unaffected.
Parasitism:
One population benefits (parasite) while the other is harmed (host). The interaction is necessary for the survival of the parasite.
Now let's try.
Remora fish attaching its body to the shark.
Answer: Commensalism
Intestinal worms.
Answer: Parasitism
Hermit crab and anemone.
Answer: Mutualism
http://www.google.com.sg/imgres?q=worms+in+intestine+cartoon&start=105&hl=en&gbv=2&biw=1440&bih=780&tbm=isch&tbnid=MVBHrAFxurXMOM:&imgrefurl=http://www.wellsphere.com/wellpage/parasitic-worms&docid=cn0ECKbr0J0BAM&imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi374OxWWT1_E3yYBIHGlCJWB6egiXuusjgi2HD6sae8OkUeHSI6FRplSMKHoX0UVp9iBizmx58dKt4l-lHwkOAY_A5Jwr6C6Blc9O8bHRqhYFOjNFpQBN25xeAFhl83eBXsrOJrq8tWor6/s320/helminth.jpg&w=320&h=217&ei=87C8T5OnNoKzrAeAm-mzDQ&zoom=1&iact=rc&dur=383&sig=106194743800114364724&page=4&tbnh=134&tbnw=160&ndsp=34&ved=1t:429,r:7,s:105,i:98&tx=57&ty=74
http://www.google.com.sg/imgres?q=remora+fish+and+shark&num=10&hl=en&gbv=2&biw=1440&bih=780&tbm=isch&tbnid=qihmGWpouf4epM:&imgrefurl=http://dedethe.blogspot.com/2012/03/symbiosis-predatorprey-mutualism.html&docid=FvLKaffw78jFoM&imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivNHHZ6PcskxPbGRe30S7s7lKsWxWQs5YXCEGi8EzP8AFxKUl2J64LnejEp8Ba_ZdNaYrjhVRDOFruZ4tImJx3fAmjuiSsXIEQj0od9nrCyVQY-qnSuFSvy1GRsomrpeM-SVhhyphenhyphenmx3R6w/s1600/shark2.jpg&w=369&h=260&ei=aK-8T9K4JojNrQe7lt2jDQ&zoom=1&iact=hc&vpx=773&vpy=151&dur=566&hovh=188&hovw=268&tx=193&ty=112&sig=106194743800114364724&sqi=2&page=1&tbnh=132&tbnw=187&start=0&ndsp=24&ved=1t:429,r:3,s:0,i:74
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