The process of evolutionary cephalization be described, Biology

Assignment Help:

Using examples of invertebrate nervous systems how can the process of evolutionary cephalization be described?

Considering the instance of invertebrates it is observed that evolution makes the enhancing of the complexity of the organisms to be accompanied by convergence of nervous cells to special structures for controlling and commanding: the ganglia and the brain. In easy invertebrates, like cnidarians, the nervous cells are not concentrated but they are found dispersed in the body. In platyhelminthes a starting of cephalization with the anterior ganglion concentrating neurons is already verified. In annelids and arthropods the existence of a cerebral ganglion is evident. In cephalopod molluscs the cephalization is even big and the brain commands the nervous system.

 


Related Discussions:- The process of evolutionary cephalization be described

Explain the differance between pinocytosis and phagocytosis, Explain the di...

Explain the differance between Pinocytosis and Phagocytosis? Pinocytosis and Phagocytosis : The cell membrane occasionally invaginates or indents to capture extracellular flu

Homeostasis, why should shivering contribute to heat gain in the body?

why should shivering contribute to heat gain in the body?

Write details of botanical source, Question 1: Write details of Botanic...

Question 1: Write details of Botanical source, common name, part of plant used, chemical constituents and uses for the given drugs: a) Momordica charantia b) Moringaoleifera c

Pancreatic juice resume the digestion of carbohydrates, Q. How does the pan...

Q. How does the pancreatic juice resume the digestion of carbohydrates? What is the involved enzyme? Carbohydrate digestion begins with the action of the salivary amylase (ptya

Explain a review of eating disorder, Explain a review of Eating Disorder? ...

Explain a review of Eating Disorder? If you talk to a group of young boys and girls in an informal setting about their physical appearance, you will find that a majority of the

Chemical stress - mineral composition, Chemical Stress - Mineral compositio...

Chemical Stress - Mineral composition The living systems make use of several mineral ions that they might have encountered at the very origin or during evolution, particularly

Define factors that are involved in the regulation, Describe the factors th...

Describe the factors that are involved in the regulation of respiration in a child who decides to hold his/her breath for as long as possible.

What is dynamic auscultation in heart surgery, What is Dynamic Auscultation...

What is Dynamic Auscultation in heart surgery? It involves determining the effects on heart sounds and murmurs of various physiological and pharmacological manoeuvres, which al

Describe the phylum chordata in animal kingdom, Describe the Phylum Chordat...

Describe the Phylum Chordata in animal kingdom? This is the other group of animals along with the Echinodermata whose anus develops prior to the mouth's development in the embr

Procedure for determination of blood glucose -nelson somogyi, Define Proced...

Define Procedure for Determination of Blood Glucose by Nelson Somogyi Method? 1. Label a series of Folins tubes with blank (B), standard (S1-S5) and sample (SA 1-2) and place

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