Pseudocoelom - metazoa, Biology

Assignment Help:

Pseudocoelom - Metazoa

The platyhelminths which do not have a body cavity surrounding the gut, have a solid type of body constitution. The mesoderm completely fills the space between body wall and alimentary canal in the form of a network of cells called parenchyma. Such animals are called acoelomates. In nematodes, there is a different situation:

675_Pseudocoelom.png

Figure:  Section of (a) acoelomates (b) pseudocoelomates

the mesoderm is confined to specific circumscribed regions within the body cavity, and this cavity is neither lined nor filled with mesoderm. The cavity is in fact a persistent blastocoel of the embryo and is called pseudocoel. The internal organs are free within the pseudocoel. The body cavity has no lining of peritoneum derived from mesoderm. Animals so constructed are called pseudocoelomates.


Related Discussions:- Pseudocoelom - metazoa

Process of respiration, Process of Respiration Respiratory and Circul...

Process of Respiration Respiratory and Circulator System Gaseous exchange that is intake of oxygen and output of carbon dioxide, takes place at the respiratory surface since

Physiology and biochemistry evidences, PHYSIOLOGY AND BIOCHEMISTRY - ...

PHYSIOLOGY AND BIOCHEMISTRY - Ample and concrete evidence of organic evolution are obtained from the functional activity and chemical composition of animals. J.B.S. Hald

Explain the process of biosynthetic phase, Describe the process of biosynth...

Describe the process of biosynthetic phase of photosynthesis occurring in the chloroplast. Explain the process of development of root nodules in a leguminous plant. Name the ox

Echinoderms, simplest way to learn their classifiction

simplest way to learn their classifiction

Plant tissue, classification of plan''s tissue

classification of plan''s tissue

Spermatocytogenesis, SPERM A T OCY T OGENESIS In this process four...

SPERM A T OCY T OGENESIS In this process four spermatid develop from one PGC. (i) Multiplication phase The spermotogonia or sperm mother cells lie next to the b

Explain the quebec colony counter, Explain the Quebec Colony Counter? I...

Explain the Quebec Colony Counter? It is used for counting the number of colonies in a plate. Culture plate is kept on the screen which is illuminated from beneath. Counting is

Chambers of the heart, Chambers of the Heart The heart is divided in...

Chambers of the Heart The heart is divided into two halves by a muscular wall or septum, the right heart and the left heart. The function of the right heart is to collect

State the definition of temperature, State the Definition of Temperature ...

State the Definition of Temperature Temperature may be defined as degree or amount of body heat.  It is the balance between heat produced and heat lost by the body.  It is meas

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