Question

which organism are called primitive and how are they different from so called advanced organism

please tell me fast​

Answer 1

Primitive organisms are those which have ancient body designs and have not changed much. They have simpler body design and are also called lower organisms. On the other land, the organisms that have acquired more complex structure and body design relatively recently are called advanced organisms.

Answer 2

Answer:

Primitive organisms are also called as lower organisms because they are less complex and they are prone to undergo changes in their bodily functions and structures. For example, single cell organisms are primitive organisms and the eukaryotic organisms are said to be the advanced forms of the primitive organisms.

Explanation:

Primitive organisms have a simpler body design whereas advanced organisms are more complex in body design. ... The complexity in design of simpler forms has increased over evolutionary time due to which they ultimately become modern complex form.Primitive organisms are those which have ancient body designs and have not changed much. They have simpler body design and are also called lower organisms. On the other land, the organisms that have acquired more complex structure and body design relatively recently are called advanced organisms.