--%>
Assignment Help - homework help

Procedure of evolutionary cephalization

Using the examples of the invertebrate nervous systems how can the procedure of evolutionary cephalization be explained?

E

Expert

Verified

Considering the example of the invertebrates it is observed that evolution creates the increasing of complexity of organisms to be accompanied by the convergence of nervous cells to special structures for commanding and controlling: ganglia and brain. In simple invertebrates, such as cnidarians, the nervous cells are not concentrated however they are found dispersed in body. In platyhelminthes a beginning of cephalization with anterior ganglion concentrating neurons is already verified. In annelids and arthropods existence of a cerebral ganglion is evident. In cephalopod molluscs the cephalization is even greater and brain commands the nervous system.

   Related Questions in Biology

  • Q : Functionality of denatured enzyme What

    What occurs to a denatured enzyme about its functionality? How can that answer be described with the aid of the lock and key model?

    		•
  • Q : Explanation of diffusion Give a brief

    Give a brief explanation of diffusion.

    		•
  • Q : Effective | Efficient Communication -

    With the advancement of technology, changes have become a regular feature in any industrial organization. An effective communication system is an essential part of good labor-management relations. The prime objective communication system is an essential part of good labor-management relations. Th

    		•
  • Q : Automated Web-Based Homology Modeling

    Automated Web-Based Homology Modeling: There are some web based techniques to generate models of protein three dimensional structures which uses comparative modeling techniques. • SWISS-Model: This can be acce

    		•
  • Q : Define the term Bio diversity Define

    Define the term Bio diversity? Briefly define it.

    		•
  • Q : Define the term motivation Briefly

    Briefly define the term motivation?

    		•
  • Q : Endoskeleton of echinoderms-analogous

    How can endoskeleton of echinoderms be typified in comparison to analogous structures present in the vertebrates, in arthropods and in molluscs?

    		•
  • Q : How are neural networks distinct than

    How are neural networks distinct than Bayesian belief networks all along the following dimensions: (A) Inspect capability of knowledge, (B) Requirement for probabilities obtained from "domain" experts, (C) Requirement for data to train the system, and (D

    		•
  • Q : What is Change Management Change

    Change Management: It is a methodical approach to dealing with change, both from the viewpoint of an organization and on the individual level. A somewhat vague term, change management has at least three distinct aspects, comprising: adapting to change

    		•
  • Q : Assessing risk in your IT strategy Now

    Now is also a good time to carry out a detailed risk assessment to understand the suitability of the strategy. A corporate risk register should be maintained to monitor and manage key assumptions As each of the outputs are brought

    		•