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 about the complete proteins, Explain about the Complete proteins? ...

Explain about the Complete proteins? We now know that proteins are composed of amino acids and that proteins differ in their amino acid make-up. Proteins lacking in one or more

Structure of the sperm, Structure of the Sperm The spermatozoa in dif...

Structure of the Sperm The spermatozoa in different animal groups display a wide variety of shapes and sizes but all share a. basic morphological plan. The sperm in most anim

Explain in detail about the term behavioural neuropsychology, Explain in de...

Explain in detail about the term behavioural neuropsychology Behavioural neuropsychology has been explained as 'the application of behaviour therapy techniques to problems of o

Experiment of making a rock collection, Making a rock collection A coll...

Making a rock collection A collection of the common rocks found in the community can be made by asking every pupil to bring in single piece of rock. Explain to the pupils that

How the sodium-potassium pump present in the cell membrane, How does the so...

How does the sodium-potassium pump present in the cell membrane work? What is the importance of this protein for the cell? The sodium-potassium pump is the transport protein th

Determine the nutritious meals to the elderly, Determine the nutritious mea...

Determine the nutritious meals to the elderly? The various considerations to be kept in mind for providing nutritious meals to the  elderly are highlighted herewith. Due

Steroids, STEROID S - These are derived lipids. Cholesterol is m...

STEROID S - These are derived lipids. Cholesterol is must in formation of steroid hormones. In steroids cyclopentanoperhydrophenentherene nucleus ring present. S

Interspecific competition, Darwin while evolving the concept of natural sel...

Darwin while evolving the concept of natural selection laid emphasis on competition among individuals belonging to a species, that is intraspecific competition. Here the individual

Define classification of proteins on the basis of attributes, Define Classi...

Define Classification of proteins on the basis of attributes? Besides classifying proteins on the basis of soluble and insoluble, proteins have been further classified based on

What are enzymes?, Enzymes are proteins that are catalysts of chemical reac...

Enzymes are proteins that are catalysts of chemical reactions. From Chemistry, it is called that catalysts are non-consumable substances that decrease the activation energy essenti

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