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

, comparitive table to explain the differences between the animals in chor...

comparitive table to explain the differences between the animals in chordate classes

What is the route of the ingested food, What is the route of the ingested f...

What is the route of the ingested food from swallowing until the duodenum? Unless reaching the duodenum the food enters the mouth, passes the pharynx, goes down the esophagus a

What is the difference between a hormone and a morphogen, What is the diffe...

What is the difference between a hormone and a morphogen? How do they act and what type of development do they control?

What would be the flow rate, The physician orders 2 liters of lactated ring...

The physician orders 2 liters of lactated ringers over 16 hours. The drip factor of the tubing is 20 gtt/cc. What will be the flow rate? a. 33.33 or 34 gtt/min b. 41.66 or 42

Define voriconazole, Define Voriconazole It is metabolized in the liver...

Define Voriconazole It is metabolized in the liver by CYP2C19, CYP2C9 and CYP3A4. CYP2C19 is genetically variant (about 3% to 5% of Caucasians and African-Americans and about 1

Zoonotic diseases-viral haemorrhagic fevers (vhf), Viral haemorrhagic fever...

Viral haemorrhagic fevers (VHF) Viral haemorrhagic fevers (VHF) are caused by a diverse group of viruses belong to the families Arenaviridae, Bunyaviridae, Filoviridae and Fla

Explain control function of organic molecules, What are some examples of th...

What are some examples of the control and informative function of organic molecules? Based on genetic information, organic molecules control the whole work of the cell. The nuc

Test, which area of the basal nuclei is responsible for controlling appendi...

which area of the basal nuclei is responsible for controlling appendicular muscle tone?

What is pollen, What is pollen? Pollen grains are the male gametophytes...

What is pollen? Pollen grains are the male gametophytes of the phanerogamic (flowering) plants. Thus within the pollen grains the male gametes of these plants are produced by m

Determine the functions of human body system, Determine the function of hum...

Determine the function of human body system Human body has different systems to perform different functions. A system consists of organs to perform a particular set of function

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