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CBSE Class 9 Answered

This is a test question posted by Vrushali
Asked by vrushali_punekar | 28 Sep, 2017, 04:41: PM
answered-by-expert Expert Answer
Thanks!
Answered by Sheetal Kolte | 28 Sep, 2017, 04:49: PM

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CBSE 9 - Biology
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Explain me how are  primitive and advanced organisms  not quite correct terms  whereas older and younger organisms are correct terms in the classification of organisms. This question comes from class -9  NCERT Book  page-82
Asked by debendra5220 | 12 Dec, 2020, 12:18: AM
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CBSE 9 - Biology
Organisms in the 1st group are frequently referred to as primitive or lower organisms,while those in second group are called advanced or higher organisms. In reality, these terms are not quite correct since they don't properly relate to differences.  Please explain me these sentences and tell me why these two terms are incorrect in reality . This question comes from page  82 of class-9 NCERT science book.
Asked by debendra5220 | 09 Dec, 2020, 03:43: PM
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