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Which organisms are called primitive and how are they different from the so-called advanced organisms? - CBSE Class 9 - Science

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Question

Which organisms are called primitive and how are they different from the so-called advanced organisms?

Solution

A primitive organism or lower organism is the one which has a simple body structure and ancient body design or features that have not changed much over a period of time. An advanced organism or higher organism has a complex body structure and organization. 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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 NCERT Solution for Science Textbook for Class 9 (2018 to Current)
Chapter 7: Diversity in Living Organisms
Q: 1 | Page no. 83

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Solution Which organisms are called primitive and how are they different from the so-called advanced organisms? Concept: Diversity in Living Organisms - Basis of Classification.
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