Match the following list of animals with their level of organization.

Division of Labour Animal
A. Organ level i. Pheritima
B. Cellular aggregate level ii. Fasciola
C. Tissue level iii. Spongilla
D. Organ system level iv. Obelia

Choose the correct match showing division of labour with animal example:

i ii iii iv
1. B C D A
2. B D C A
3. D A B C
4. A D C B
Subtopic:  Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes | Phylum Aschelminthes | Phylum Annelida | Phylum Arthropoda | Phylum Mollusca | Phylum Echinodermata | Phylum Hemichordata | General Introduction: Vertebrates & Agnatha |
 87%

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The animals belonging to all the following groups are exclusively marine except:

1. Ctenophora 2. Porifera
3. Protochordata 4. Echinodermata
Subtopic:  Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes | Comparative study of Cartilagenous & Bony Fishes |
 74%

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