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Regarding organisation in animals : Match the following and choose the most appropriate option:

A. Cellular level of organisation 1. Annelids
B. Tissue level of organisation 2. Arthropods
C. Organ level of organisation 3. Chordates
D. Organ system level of organisation 4. Coelenterates
5. Echinoderms
6. Molluscs
7. members of Aschelminthes
8. members of Platyhelminthes
9. sponges

( A ) A-9; B-3; C-7; D-1,2,4,5
( B ) A-8; B-4; C-7; D-1,2,3,5
( C ) A-9; B-3; C-8; D-1,2,4,5,6
( D ) A-9; B-4; C-8; D-1,2,3,5,6
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(D) is the right answer.

In animals: sponges exhibit cellular level of organisation; coelenterates - tissue level of organisation; organ level of organisation is exhibited by members of Platyhelminthes and other higher phyla; Annelids, Arthropods, Molluscs, Echinoderms and Chordates - organ system level of organisation.
answered Apr 2, 2014 by pady_1
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