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The tentacles of the [[giant squid]] and [[colossal squid]] have powerful suckers and pointed teeth at the ends. The teeth of the giant squid resemble [[crown cork|bottle caps]] and function like tiny [[hole saw]]s, while the tentacles of the colossal squid wield two long rows of swiveling, tri-pointed hooks.
===Cnidarians
[[Cnidarian]]s, such as [[jellyfish]], [[sea anemone]]s, ''[[Hydra (genus)|Hydra]]'' and [[coral]] have numerous hair-like tentacles. Cnidarians have huge numbers of [[cnidocyte]]s on their tentacles. In [[jellyfish|medusoid form]], the body floats on water so that the tentacles hang down in a ring around the mouth. In [[polyp (zoology)|polyp]] form, such as sea anemone and coral, the body is below with the tentacles pointed upwards.
Many species of the jellyfish-like [[ctenophore]]s have two tentacles, while some have none. Their tentacles have adhesive structures called ''[[colloblast]]s'' or ''lasso cells''. The colloblasts burst open when prey comes in contact with the tentacle, releasing sticky threads that secure the food.<ref>{{cite web | author= Bird J | title= CNIDARIANS: SIMPLE ANIMALS WITH A STING! | url= http://www.oceanicresearch.org/education/wonders/cnidarian.html | date= 5 June 2007 | work= oceanicresearch.org | publisher= Oceanic Research Group | access-date= 2013-06-08 | url-status= live | archive-url= https://web.archive.org/web/20130707024559/http://www.oceanicresearch.org/education/wonders/cnidarian.html | archive-date= 7 July 2013 | df= dmy-all }}</ref>▼
The tentacles of the [[lion's mane jellyfish]] may be up to {{convert|37|m|ft|abbr=on}} long. They are hollow and are arranged in 8 groups of between 70 and 150. The longer tentacles are equipped with cnidocytes whose venom paralyses and kills prey. The smaller tentacles guide food into the mouth.<ref>{{cite web | author= Kosner AW | title= Lion's Mane Jellyfish Image: This Is (Literally) How Things Blow Up On The Internet! | url= https://www.forbes.com/sites/anthonykosner/2012/07/10/lions-mane-jellyfish-image-this-is-literally-how-things-blow-up-on-the-internet/2/ | date= 10 July 2012 | work=[[Forbes]] | access-date= 2013-06-08 | url-status= live | archive-url= https://web.archive.org/web/20130625154715/http://www.forbes.com/sites/anthonykosner/2012/07/10/lions-mane-jellyfish-image-this-is-literally-how-things-blow-up-on-the-internet/2/ | archive-date= 25 June 2013 | df= dmy-all }}</ref><ref>{{cite web|author=Wild Facts|title=Wild Fact #419 – One Large Jelly – Lion's Mane Jellyfish|url=http://www.wild-facts.com/2011/wild-fact-419-one-large-jelly-lions-mane-jellyfish/|date=29 November 2011|work=wild-facts.com|access-date=2013-06-08|url-status=live|archive-url=https://web.archive.org/web/20121219091103/http://www.wild-facts.com/2011/wild-fact-419-one-large-jelly-lions-mane-jellyfish/|archive-date=19 December 2012|df=dmy-all}}</ref>
===Ctenophores===
▲Many species of the jellyfish-like [[ctenophore]]s have two tentacles, while some have none. Their tentacles have adhesive structures called ''[[colloblast]]s'' or ''lasso cells''. The colloblasts burst open when prey comes in contact with the tentacle, releasing sticky threads that secure the food.<ref>{{cite web | author= Bird J | title= CNIDARIANS: SIMPLE ANIMALS WITH A STING! | url= http://www.oceanicresearch.org/education/wonders/cnidarian.html | date= 5 June 2007 | work= oceanicresearch.org | publisher= Oceanic Research Group | access-date= 2013-06-08 | url-status= live | archive-url= https://web.archive.org/web/20130707024559/http://www.oceanicresearch.org/education/wonders/cnidarian.html | archive-date= 7 July 2013 | df= dmy-all }}</ref>
===Bryozoa===
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