Fragmentation, Biology

Assignment Help:

Fragmentation

In this type an organism breaks down into two or more pieces, each of which grows into a new individual. This means of reproduction is found in the organisms -which have good power of regeneration. Sponges and hydroid coelentrates exhibit this type of reproduction. If a sponge is macerated by pressing it through fine gauge, the separated cells come together in groups and grow into new individuals.

Very small fragments of free-living flatworms will regenerate into new individuals if right conditions are provided to them. A nemertine worm, Lineus, develops rings of constriction which cut the body into short fragments. These animals possess large number of undifferentiated cells which, when required can proliferate and develop into any kind of tissue.

 


Related Discussions:- Fragmentation

Technological level - pollution control, Technological level - Pollution co...

Technological level - Pollution control Air pollution can be reduced by using bag filters, electrostatic precipitators and cyclone separators that separate large and small par

A decrease in blood plasma levels of calcium, A decrease in blood plasma le...

A decrease in blood plasma levels of calcium will lead to A. an increase in the calcium ion excretion in the urine. B. an increase in the calcium ion absorption from the con

Explain the histologic techniques, Explain the histologic techniques A...

Explain the histologic techniques A clinician has to base the diagnosis only on the clinical and radiographic findings as microbiologic and histologic techniques are restricte

Briefly explain associated mitral regurgitation, Explain Associated Mitral ...

Explain Associated Mitral Regurgitation and their role in miscellaneous conditions? Normal 0 false false false EN-IN X-NONE X-NONE

Explain phylum myxornycetes, Phylum Myxornycetes 1) They are known as c...

Phylum Myxornycetes 1) They are known as cellular slime moulds mostly grow in damp places e.g. soil and rotting tree trunks. 2) They have a curious life-cycle in which free

Surrogacy, what is surrogate motherhood

what is surrogate motherhood

What are the causes of endodontic pain, What are the causes of endodontic p...

What are the causes of endodontic pain? Lesions in retreatment cases called post endodontic diseases. Reasons of Endo retreatment; = reasons of failure: - Signs or symptoms of

What do you mean by binomial system in binomial nomenclature, Q. What do yo...

Q. What do you mean by Binomial system in binomial nomenclature? In the previous sections we have outlined the concepts of binomial nomenclature at International level and the

Biological diversity of an ecosystem, Q. Is monoculture a system that contr...

Q. Is monoculture a system that contributes to great biological diversity of an ecosystem? The Monoculture implies that in a large area a single crop (only one species of plant

What do you mean by myocarditis, Q. What do you mean by Myocarditis? My...

Q. What do you mean by Myocarditis? Myocarditis is defined as inflammation of the myocardium. The most common cause is Coxsackie B virus infection. But it can also be due to

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