Project #68029 - Bio 175 words disscus and two 75 words reply

One of the main criteria we use in classifying animals is their coelum or body cavity.  What is the purpose of a coelum and why is it so important?

Explain the difference between an Acoelomate, Pseudocoelomate and Coelomate animals.  Give examples of each.( 175 words)

 

Reply: (75 words each)

1.One very important defining feature in classifying animals is their coelom or body cavity. A coelom is a body cavity where organs are housed. The importance of having a coelom is that you can be a more complex animal and have all sorts of organs in your body cavity.

Coelomate have a true body cavity a true coelomate. This allows them to be more complex, more advanced and have more organ systems in their body. Humans and vertebrate animals would be examples of a Coelomate.

Pseudocoelomates have a body cavity but it is not a complete body cavity. There is some place to put their organs but it is not complex. A roundworm would be an example of a Pseudocoelomate.

Acoelomate means no body cavity. These organisms do not have a place to house complex organs. A flatworm would be an example of a Acoelomate.   

 

 

2.Coelom is the cavity that develops embryonic development of animals. The cavity of coelom helps develop from tissue the mesoderm germ layer. Fluid – filled cavity cushions the internal organs, which allows their expansion and contraction.

 Coelomate – animal that posses a fluid cavity within which the digestive system is suspended. Lack of coelomate correlates with a reduction in body size.

Pseudocoelomate – is an invertebrate having a body cavity that is pseudocoelomate, pseudocloelomate animals have pseudocoel, which is fully functional body cavity. A for this can be a roundworm.

Acoelomate – an organism that lacks a cavity between the body wall and the digestive system tract.

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