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

Difference between tracheophytes and bryophytes, Q. What is the difference ...

Q. What is the difference between tracheophytes and bryophytes? Bryophytes are nonvascular plants (liverworts, mosses, hornworts), that is they do not have a conductive system

State the strengths of brief screening measures, Strengths of Brief Screeni...

Strengths of Brief Screening Measures 1) Inexpensive, rapid, portable 2) Needs less training in administration and interpretation 3) Differentiating between dementia and

Explain glycolysis, Explain glycolysis? Name the two monosaccharides w...

Explain glycolysis? Name the two monosaccharides which readily enter the glycolytic pathway. Illustrate a diagrammatic sketch of the microscopic view of a mammalian sperm a

Explain the culture media and its types, Explain the Culture Media and Its ...

Explain the Culture Media and Its Types? A culture medium (Pl. media), we already know, is a solid or liquid preparation containing all the nutrients required by microorganisms

Explain fliylurn basidiomycetes, Fliylurn Basidiomycetes 1) The asexual...

Fliylurn Basidiomycetes 1) The asexual reproduction is by means of basidiospores which are produced on a microscopic, club-shaped basidium. 2) The basidia are found in a fru

Describe about postural changes in dynamic auscultation, Describe about Pos...

Describe about Postural Changes in Dynamic Auscultation? a) On sudden assumption of supine position from standing on sitting position or sudden passive elevation of both legs:

What is digestion, What  is digestion? The  ingested food material  is...

What  is digestion? The  ingested food material  is  broken down  into smaller constituents which  are assimilable  by  the  blood.  The  process  through which  the major nutr

Explain microbiology of water, Q. Explain microbiology of water? Ans. ...

Q. Explain microbiology of water? Ans. Unlike air, natural waters contain their natural flora, as well as, microorganisms from soil and possibly from animals and se

Define the effect of dietary fibre on nutrient absorption, Define the effec...

Define the effect of dietary fibre on Nutrient Absorption? Nutrient Absorption: Inclusion of fibre has been shown to retard the absorption of some nutrients. The inclusion of v

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