Echinodermata - regeneration in invertebrates, Biology

Assignment Help:

Echinodermata - Regeneration in Invertebrates

Asteroids (starfishes), ophiuroids (brittle stars) and crinoids (sea lilies) can reproduce their lost arms and although parts of their disc. The arms of starfishes show autotomy. When disturbed or caught by a predator they cast off one or more arms near the base and regenerate them again. In Linckia species an arm completely devoid of any pan of disc regenerates the complete body. Such types of regenerating sea stars are called comets. Brittle stars and sea lilies as well practice autotomy in distress conditions and can regenerate their arms from the remaining part of the arm. Autotomy is specifically striking in sea cucumbers (Holothuroidea) which, when startled or disturbed, can eject by their anus all their internal organs, specifically the respiratory tree and alimentary canal. This spontaneous 'self-evisceration' is followed by complete regeneration of the viscera. If transversely bisected each half of the holothurians, regenerates the missing half to whole the body.


Related Discussions:- Echinodermata - regeneration in invertebrates

Evaluation of health services, CONCEPT AND MEANING OF EVALUATION: Eval...

CONCEPT AND MEANING OF EVALUATION: Evaluation of programmes is critical for measuring various community health services The ultimate reasons for doing evaluation is to ensure

Difference, 1:What is the difference between TERGA and STERNA? 2:What is th...

1:What is the difference between TERGA and STERNA? 2:What is the difference between AMPHID and PHASMID?

Explain the failure to management of ledge, Explain the Failure to Manageme...

Explain the Failure to Management of Ledge Apical transportation or perforation: movement of the physiological foramen to a new iatrogenic location. Three types of apical tr

Prokaryotes and eukaryotes, Prokaryotes and Eukaryotes By now, you kno...

Prokaryotes and Eukaryotes By now, you know that cell theory holds good for all living forms. However, if you examine under the microscope, the cells of a bacterium, a blue gr

Explain the turbidity measurement, Explain the Turbidity Measurement? P...

Explain the Turbidity Measurement? Presence of sufficient number of microbes makes the liquid medium turbid. Turbidity also increases with the multiplication of microbes. Estim

What is the structure that maintains identical chromatids, What is the stru...

What is the structure that maintains identical chromatids bound? The structure that maintains identical chromatids bound is the centromere. Cell Nucleus Review - Image Diver

Homeostais, what is homeostasis and how does it happen

what is homeostasis and how does it happen

Of what importance are lactic acid fermentation to the cell, Of what import...

Of what importance are lactic acid fermentation and alcoholic fermentation to the cells that use these pathways? These pathways regenerate NAD, which the cells can use to keep

What is elongation cycle , At the starting of the first round of elon...

At the starting of the first round of elongation, the initiation codon (AUG) is positioned in the P site with fMet-tRNAfMet bound to it by codon-anticodon base pairing.  In The nex

Define fatty acid synthesis, Fatty acid synthesis is the formation of fatty...

Fatty acid synthesis is the formation of fatty acids from malonyl-CoA and acetyl-CoA precursors by action of enzymes called as fatty acid synthases. It is a very significant part o

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd