Annelids - regeneration in invertebrates, Biology

Annelids - Regeneration in Invertebrates

Between the segmented worms both the polychaetes and oligochaetes have remarkable powers of regeneration. Leeches totally lack this capability. In polychaetes tentacles, palps, and even heads ripped off by predators are soon replaced. This is of common occurrence in burrowers and tube dwellers. Some worms as well display self-amputation or autotomy. For example, the posterior segments are detached while the worm is disturbed and they are regenerated soon thereafter. Earthworms (oligochaeta) can as well regenerate both anterior and posterior segments. If an earthworm is cut into two halves the posterior half regenerates the anterior segments involving the mouth, and the anterior half regenerates from its posterior cut end, the new posterior segments. Two new individuals so rise from the original one.

Posted Date: 1/31/2013 6:06:38 AM | Location : United States







Related Discussions:- Annelids - regeneration in invertebrates, Assignment Help, Ask Question on Annelids - regeneration in invertebrates, Get Answer, Expert's Help, Annelids - regeneration in invertebrates Discussions

Write discussion on Annelids - regeneration in invertebrates
Your posts are moderated
Related Questions
Q. What is the association between sunrays and vitamin D? Vitamin D or calciferol is synthesized in the skin by the action of the ultraviolet range of sunrays upon precursor mo

Oxygen Stratification - Lake Ecosystem In most lakes, oxygen stratification nearly parallels that of temperature during the summer season. The amount of oxygen is greatest on

Q. What is the climax stage of an ecological succession? The climax stage is the stage of an ecological succession in which the community of an ecosystem turn into stable and d

What is the difference between amnion and chorion? Amnion is the membrane that covers the embryo. Chorion is the membrane that covers the amnion, the yolk sac and the allantois

Ratios of the bases in different samples of nucleic acid yielded the following results: a.  A + C    =   0.6         b.     A  +  C    =  1            c.       A  + G    =  1.2

Explain Microtube and Hedstorm file removal technique A Hedstorm file was then passed down the length of the tube until it engaged itself tightly between the obstruction an

Q. What is the basic importance of water for enzymatic activity? Ans. Biological catalysts, Enzymes, relay on water to reach their substrates and attach to them. There is

Name the proteins used in oteoblast Some of these proteins include fibronectin, thrombospondin, osteopontin and osteoadherin (most of them have RGD cell binding peptide for bin

Define the Food Pricing? The pricing of the food products bought by the consumer is subject to multifarious factors. Each of the factors as discussed below can affect the prici

What is cold-shortening It is important to point out that over-effective chilling of hot carcasses can lead to toughness. If the temperature of the meat (muscles) can be reduce