What is coelom - body cavity explain, Biology

Assignment Help:

What is Coelom - Body Cavity explain?

Among the bilaterally symmetrical organisms, animals have three different types of body plans with respect to body cavities. The term coelom is used to describe a specific type of body cavity, one that forms from within the middle layer of tissue in a body, the mesoderm. One type of animal body is solid, lacking an internal cavity, or coelom, between the digestive tract and the layers of the body wall. Organisms with a solid body plan are called Acoelomates. A second group of organisms develops an internal body cavity, but it forms between the endoderm and mesoderm instead of within the mesoderm itself. This group is called the Pseudocoelomates. The third group, the Coelomates, develops the coelom by parting the mesoderm.

While the presence or absence of a coelom may seem like a minor issue, it is in terms of evolution that the development of a body cavity takes on significance. Without a body cavity, the solid body limits circulation of gases and nutrients. Being in direct contact with the muscles of the body, the digestive and circulatory systems are subjected to pressure and distortion whenever the body bends. These factors limit flow in these systems, and therefore their efficiency. The presence of a coelom, then, provides interior space for the increased specialization and effective functioning of tissues and organs involved in circulation and digestion. Interior body space also provides for reproductive organs and systems that utilize internal fertilization and embryo development.

 


Related Discussions:- What is coelom - body cavity explain

Which chamber does the blood go after leaving left atrium, Q. To which hear...

Q. To which heart chamber does the blood go after leaving the left atrium? What is the valve that separates these compartments? The valve between the left atrium and the left v

Is reproduction in sponges asexual or sexual, Q. Is reproduction in sponges...

Q. Is reproduction in sponges asexual or sexual? Reproduction in sponges can be asexual by budding, fragmentation or gemmation (regeneration) or sexual with larval stage a cili

Describe cluster analysis, Q. Describe Cluster analysis? After making a...

Q. Describe Cluster analysis? After making a similarity table, it is then rearranged so that OTU's whose members have the highest mutual similarity are brought together. This c

Prevention of overloading the sterilizer, Prevention of overloading the ste...

Prevention of overloading the sterilizer Most sterilizers have a system to notify the operator of mechanical malfunction, but sterilizers cannot notify the operator whether the

Define interaction of niacin with other nutrients, Define Interaction of ...

Define Interaction of niacin with other Nutrients? You may recall reading earlier that trypotophan present in dietary proteins is converted to niacin. There is an interdepend

Concentration Gradients and Membrane Permeability, 3. Which substance(s) cr...

3. Which substance(s) crossed the dialysis membrane? Support your response with data-based evidence.

What is the spontaneous generation hypothesis, What is the spontaneous gene...

What is the spontaneous generation hypothesis? The spontaneous generation hypothesys, or abiogenesis, asserts that life on earth has come from nonliving material. For instance,

PHYLUM MOLLUSCA, how we attempt a question of phylum mollusca in exame?

how we attempt a question of phylum mollusca in exame?

Hazardous material - factors affecting occupational health, Hazardous Mater...

Hazardous Material - Factors Affecting Occupational Health Handling and storage of flammable and combustible liquids all the time pose threat to occupational safety. Fire and

Atp molecules are produced for each glucose molecule, How many ATP molecule...

How many ATP molecules are produced for each glucose molecule used in fermentation? How many ATP molecules are produced for each glucose molecule used in aerobic respiration? I

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