What are the characteristics of:
feeding structure,
respiration structure,
excretion structrue, and
Reproduction of sea cucumber?
And please be simple, for I need to fill out a table. I've been searching the web for one hour, but had no luck. Please help me. Thank you!|||They feed through the mouth, eat debris etc.
They have respiratory tree which acts as respiratory organs as well excretory organ. There is also what is called cloacal respiration.
Fertilization is external and larva is auricularia.|||Take a look at these web sites:
http://en.wikipedia.org/wiki/Sea_cucumbe鈥?/a>
http://library.thinkquest.org/J001418/se鈥?/a>
http://www.mcwdn.org/Animals/Starfish.ht鈥?/a>
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