Question

which organisms are called primitive and how are they different from the so-called advanced organisms​

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 organism :-

The organism which have ancient body

design that have not changed very much.

They are also called lower organism.

Advanced organism:-

The group of organism that have acquired their particular body design relatively.

They are also called higher organism.