1. http://www.questia.com/googleScholar.qst?docId=79091823
2.http://books.google.co.in/booksid=OmZ6CfHQIZ8C&pg=PA192&lpg=PA192&dq=Flowering+plants+and+pollinators+symbiosis&source=bl&ots=_zMua1AF6h&sig=h4a6dTq6Ze8paNmPUcWpN36XzVU&hl=en&sa=X&ei=YkJCT92qIomyrAfL2KG_Bw&ved=0CCgQ6AEwAQ#v=onepage&q=Flowering%20plants%20and%20pollinators%20symbiosis&f=false
3.http://indianapublicmedia.org/amomentofscience/yucca-flowers-and-yucca-moths/
4. http://www.nsf.gov/news/special_reports/science_nation/leafcutterants.jsp
5. http://scienceblogs.com/notrocketscience/2009/11/leafcutter_ants_rely_on_bacteria_to_fertilise_their_fungus_g.php
6. http://thewherefores.tumblr.com/post/5486536094/leafhoppers-and-meat-ants-symbiosis
7. http://www.glogster.com/alexnelson55/meat-ants-and-leafhoppers/g-6mhq006s1c9sbfpo0fq42a0?old_view=True
8. http://news.bbc.co.uk/2/hi/8383577.stm
9. http://web.fccj.org/~dbyres/ant1.html
10. http://www.jstor.org/pss/1442019
11. http://books.google.co.in/books?id=ykfUN84wQQ8C&pg=PA377&lpg=PA377&dq=Angler+fish+symbiosis&source=bl&ots=5EjsUuSgA7&sig=lAgloxIMoQZO2DHLkvmaIxJHnUA&hl=en&sa=X&ei=gC9GT-CQIqnumAW3wuGTDg&ved=0CG0Q6AEwCQ#v=onepage&q=Angler%20fish%20symbiosis&f=false
12. http://www.nzqa.govt.nz/assets/qualifications-and-standards/qualifications/ncea/NCEA-subject-resources/Earth-and-Space-Science/91190-B/91190-EXP-B-student2-001.pdf
13. http://mmbr.asm.org/content/63/4/968.full
14. http://www.jic.ac.uk/science/molmicro/rhizo.html
15. http://www.ncbi.nlm.nih.gov/pubmed/17953546
16. http://www.ucmp.berkeley.edu/fungi/lichens/lichens.html
17. http://www.tnenvis.nic.in/Lichens/Lichen%20Overview.pdf
18. http://www.mbari.org/staff/conn/botany/lichens/symbiosis.htm
19. http://www.biology.ed.ac.uk/research/groups/jdeacon/microbes/lichen.htm
20. http://edis.ifas.ufl.edu/hs379
21. http://www.avocadosource.com/papers/Research_Articles/FraedrichSW2008b.pdf
22. http://www.in.gov/dnr/entomolo/files/ep-GranulateAmbrosiaBeetleFactsheet.pdf
23. http://www.nbaindia.org/docs/bulletin2-biodiversityofazolla.pdf
24. http://waynesword.palomar.edu/plnov98.htm
25. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1092147/
26. http://www.jstor.org/pss/2434529
27. http://www.jstor.org/pss/1546908
28. http://magma.nationalgeographic.com/ngexplorer/0601/articles/mainarticle.html
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30. http://www.earth-touch.com/result.php?i=Rhinos-graze-with-oxpeckers-on-board
31. http://books.google.co.in/books?id=NWZHcIrhEiQC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
32. http://www.buzzle.com/articles/clownfish-and-sea-anemone.html
33. http://www.garf.org/trever/anem/anenome.html
34. http://www.swarthmore.edu/x33531.xml
2.http://books.google.co.in/booksid=OmZ6CfHQIZ8C&pg=PA192&lpg=PA192&dq=Flowering+plants+and+pollinators+symbiosis&source=bl&ots=_zMua1AF6h&sig=h4a6dTq6Ze8paNmPUcWpN36XzVU&hl=en&sa=X&ei=YkJCT92qIomyrAfL2KG_Bw&ved=0CCgQ6AEwAQ#v=onepage&q=Flowering%20plants%20and%20pollinators%20symbiosis&f=false
3.http://indianapublicmedia.org/amomentofscience/yucca-flowers-and-yucca-moths/
4. http://www.nsf.gov/news/special_reports/science_nation/leafcutterants.jsp
5. http://scienceblogs.com/notrocketscience/2009/11/leafcutter_ants_rely_on_bacteria_to_fertilise_their_fungus_g.php
6. http://thewherefores.tumblr.com/post/5486536094/leafhoppers-and-meat-ants-symbiosis
7. http://www.glogster.com/alexnelson55/meat-ants-and-leafhoppers/g-6mhq006s1c9sbfpo0fq42a0?old_view=True
8. http://news.bbc.co.uk/2/hi/8383577.stm
9. http://web.fccj.org/~dbyres/ant1.html
10. http://www.jstor.org/pss/1442019
11. http://books.google.co.in/books?id=ykfUN84wQQ8C&pg=PA377&lpg=PA377&dq=Angler+fish+symbiosis&source=bl&ots=5EjsUuSgA7&sig=lAgloxIMoQZO2DHLkvmaIxJHnUA&hl=en&sa=X&ei=gC9GT-CQIqnumAW3wuGTDg&ved=0CG0Q6AEwCQ#v=onepage&q=Angler%20fish%20symbiosis&f=false
12. http://www.nzqa.govt.nz/assets/qualifications-and-standards/qualifications/ncea/NCEA-subject-resources/Earth-and-Space-Science/91190-B/91190-EXP-B-student2-001.pdf
13. http://mmbr.asm.org/content/63/4/968.full
14. http://www.jic.ac.uk/science/molmicro/rhizo.html
15. http://www.ncbi.nlm.nih.gov/pubmed/17953546
16. http://www.ucmp.berkeley.edu/fungi/lichens/lichens.html
17. http://www.tnenvis.nic.in/Lichens/Lichen%20Overview.pdf
18. http://www.mbari.org/staff/conn/botany/lichens/symbiosis.htm
19. http://www.biology.ed.ac.uk/research/groups/jdeacon/microbes/lichen.htm
20. http://edis.ifas.ufl.edu/hs379
21. http://www.avocadosource.com/papers/Research_Articles/FraedrichSW2008b.pdf
22. http://www.in.gov/dnr/entomolo/files/ep-GranulateAmbrosiaBeetleFactsheet.pdf
23. http://www.nbaindia.org/docs/bulletin2-biodiversityofazolla.pdf
24. http://waynesword.palomar.edu/plnov98.htm
25. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1092147/
26. http://www.jstor.org/pss/2434529
27. http://www.jstor.org/pss/1546908
28. http://magma.nationalgeographic.com/ngexplorer/0601/articles/mainarticle.html
29. http://www.daviddarling.info/encyclopedia/S/symbiosis.html
30. http://www.earth-touch.com/result.php?i=Rhinos-graze-with-oxpeckers-on-board
31. http://books.google.co.in/books?id=NWZHcIrhEiQC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
32. http://www.buzzle.com/articles/clownfish-and-sea-anemone.html
33. http://www.garf.org/trever/anem/anenome.html
34. http://www.swarthmore.edu/x33531.xml