Question

What is the difference between the organ level and the organ system level in the level of organisation in multicellular organisms?

Answer 1

Group of tissues is known as organ and group of organs is known as organ system

Answer 2

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Here's your answer !!!

Organ level organisation :

An aggregation of different kind of tissues which is specialised for a particular function is called an organ...

Organ level of organisation is a further advancement over the tissue level in the evolution of levels of organisation..

Organ level of organisation appeared for the first time in the members of phylum Platyhelminthes...


Organ system level of organisation :

It is the highest level of organisation among the animals and is exhibited by the triploblastic animals such as the flatworms , nematodes, Annelids , arthropods, molluscs , echinoderms and chordates...

In triploblastic animals , the evolution of mesoderm resulted in structural complexity..

In these animals , the tissues are assembled to form organs and complex organ systems..

Highly specialised sensory and nerve cells bring about a higher level of coordination and integration among the various organ systems to lead an efficient way of life ...

Organ systems is different groups of animals exhibit various pattern of complexities...For example circulatory system may be open or closed according to the phylas...


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