Metazoan branches, Biology

Assignment Help:

Metazoan Branches

The Kingdom Animalia comprises all the multicellular animals (metazoans). These are divided into three branches:

  1. Mesozoa
  2. Parazoa
  3. Eumetazoa

The Mesozoa comprise a tiny single phylum (Phylum Mesozoa); the Parazoa comprise two phyla a tiny single phylum Placozoa and the rest make up the phylum Porifera comprising the sponges. Most of the metazoans come under the major branch Eumetazoa You must note that the cellular layers of Porifera (sponges) are not homologous to the germ layers of Eumetazoa. Their developmental pattern is also quite different from that of the Eumetazoa. The Parazoa are regarded as an early evolutionary side branch of the animal kingdom, which did not give rise to any other group of animals.


Related Discussions:- Metazoan branches

Describe the genetic material of a virus, Q What is the genetic material of...

Q What is the genetic material of a virus? How does that material act in viral reproduction? There is DNA viruses double strand or single strand DNA and RNA viruses double stra

Explain the miracidium larva, Explain the Miracidium larva? Miracidium ...

Explain the Miracidium larva? Miracidium is the first stage larva that comes out from the fertilized egg. i) Miracidium is an oval, microscopic, flattened larva which appear

Risk factor modification, Risk Factor Modification :  Even after CABG,...

Risk Factor Modification :  Even after CABG, patients are at risk of progression of native coronary artery disease and development of lesions in the conduits. Modification of

Nursing assessment - hypospadias, Nursing Assessment Hypospadias can b...

Nursing Assessment Hypospadias can be observed by nurse or parents at birth. The child presents with abnormal pattern of voiding and presence of chordae. The stream of ur

What are examples of nematodes, What are examples of nematodes? Ascaris...

What are examples of nematodes? Ascaris, hookworm and filaria, all parasites of humans, are instance of nematodes (also called as roundworms).

Nurse''s role during phototherapy, Nurse's Role During Phototherapy Y...

Nurse's Role During Phototherapy You should take care of following while nursing the baby in receiving phototherapy. Check the lights of phototherapy unit before use and

Explain food intolerances, Food Intolerances Food Intolerances:  The in...

Food Intolerances Food Intolerances:  The intolerances of  the patient for specific food  items must be assessed. For example,  milk may lead  to diarrhoea  in some people whil

Polypeptide chains of hemoglobin, Q. In sickle cell anemia, a hereditary di...

Q. In sickle cell anemia, a hereditary disease, there is replacement of one amino acid by another in one of the four polypeptide chains of hemoglobin. In this case are all of the s

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