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Identify (1), (2) and (3) from the given table.

PhylumGerm layerBody cavity(1) __________TriploblasticNo coelomNematodaTriploblastic(2) __________Annelida(3) ________True coelom

 
  1. (1) Porifera, (2) No coelom, (3) Diploblastic
  2. (1) Platyhelminthes, (2) True coelom, (3) Triploblastic
  3. (1) Platyhelminthes, (2) False coelom, (3) Triploblastic
  4. (1) Porifera, (2) False coelom, (3) Triploblastic


Solution

The correct option is C (1) Platyhelminthes, (2) False coelom, (3) Triploblastic
In the animal kingdom, different Phylums have different characteristics. For example, 
 Phylum Platyhelminthes - The animals belonging to this phylum are triploblastic. They lack body cavity and hence are called acoelomates.
 Phylum Nematoda - The animals belonging to this phylum are triploblastic but they have a body cavity lined by patches of mesoderm. Thus they are considered as psuedocoelomates. 
Phylum Annelida - The animals belonging to this phylum are triploblastic with true body cavity (eucoelomates). 

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