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

Explain adverse effects of interferon alfa, Adverse Effects Of interferon a...

Adverse Effects Of interferon alfa Intramuscular or subcutaneous injection of interferon is commonly associated with an influenza-like syndrome, especially during the first wee

Why is pattern baldness more common in men than in women, Why is pattern ba...

Why is pattern baldness more common in men than in women? Pattern baldness is handled by the allele B. Testosterone interacts with the heterozygous genotype (BB′) to make baldn

Explain the leydig cells, In an adult male, which of the following is true?...

In an adult male, which of the following is true? A. The plasma membranes of Leydig cells contain LH receptors. B. The plasma membranes of Sertoli cells contain FSH receptor

How is this neural organization important for the diversity, Is the nervous...

Is the nervous system in platyhelminthes more or less sophisticated than in cnidarians? What are the main neural structures found in flatworms? How is this neural organization impo

Which kind of chemical bond maintains the pairing, Q. Which kind of chemica...

Q. Which kind of chemical bond maintains the pairing of each chain in the DNA molecule? To form the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds

Describe the main cycle in metabolism of cornea, Describe the main cycle in...

Describe the main cycle in metabolism of cornea. Main Cycle: Glycolysis is represented by the central chain and involves the anaerobic conversion of glucose into pyruvic

Project, occurrence of e.coli 0157:H7 on vegetables

occurrence of e.coli 0157:H7 on vegetables

Define technique of paper chromatography, Define Technique of Paper chromat...

Define Technique of Paper chromatography? Paper chromatography is used as 1. Ascending, 2. Descending or 3. Horizontal technique (circular paper chromatography) It is De

Define briefly about the cereal proteins, Define briefly about the Cereal P...

Define briefly about the Cereal Proteins? Cereal grains, properly ripened and dried for optimum storage stability, have protein content ranging from 6-20%. Proteins are found i

Anti-diuretic hormone, who discovered it? and what is it''s physiologic fun...

who discovered it? and what is it''s physiologic functions?

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