Class 9 Science - Chapter Diversity in Living Organisms NCERT Solutions | Which organisms are called primitive and
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Primitive organisms are those which have a simple body structure (lower organisms) and ancient body design that have not changed much. The organisms that have acquired more complex structure and body design are known as advanced organisms or higher organisms. For example, an Amoeba is more primitive as compared to a starfish. Amoeba has a simple body structure and primitive features as compared to a starfish. Hence, an Amoeba is considered more primitive than a starfish.
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