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

Categories of phloem transport, Categories of Phloem Transport Essenti...

Categories of Phloem Transport Essentially, the phloem transport can be subdivided into the following: The "loading" of the organic nutrients from the mesophyll c

Explain process of selection of taxonomic characters, Explain process of Se...

Explain process of Selection of taxonomic characters Selection of taxonomic characters Eventually classification systems may be based almost entirely on direct study of th

Cytoplasmic bridge formed during the conjugation of paramoec, Cytoplasmic b...

Cytoplasmic bridge formed during the conjugation of paramoec: The two paramoecia that undergo conjugation are called conjugants. During conjugation, the two conjugants com

Advantages of pyramid of energy, Advantages of Pyramid of Energy A pyr...

Advantages of Pyramid of Energy A pyramid of energy must be based on determination of the actual amounts of energy that individuals take in, how much they burn up during metab

How is a prototype drug different from other drugs, How is a prototype drug...

How is a prototype drug different from other drugs in the same class?

Internal budget - nutrient budgets, Internal budget - Nutrient Budgets ...

Internal budget - Nutrient Budgets This is concerned with the circulation of nutrients through various biotic and abiotic compartments of a given ecosystem. In other words the

What is the typical localization of the tropical forests, What is the typic...

What is the typical localization of the tropical forests regarding latitude? The Tropical rain forests, like the Congo forest and the Amazon forest, are typically located in lo

State the term - psychophysiology, State the term - Psychophysiology Th...

State the term - Psychophysiology This refers to the study of psychological theories using physiological measures. In other words, psycho-physiologists normally try to understa

Etiologic factor of dyslipidemia, Q. Etiologic factor of dyslipidemia? ...

Q. Etiologic factor of dyslipidemia? The causative factors of dyslipidemia/hyperlipidemia may be environmental (dietary/ lifestyle), genetic or secondary to certain disease con

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