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1. Members of phylum - porifera are commonly known as sponges. 2. Sponges are generally marine and mostly symmetrical animals. 3. Sponges are primitive multicellular animals and have tissue level of organisation. Regarding 1,2 and 3:

( a ) 1 is correct but 2 and 3 are incorrect
( b ) 3 is incorrect but 1 and 2 are correct
( c ) 1 is incorrect but 2 and 3 are correct
( d ) 2 is incorrect but 1 and 3 are correct
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(A) is the right answer.

Members of phylum - porifera are commonly known as sponges. They are generally marine and mostly asymmetrical animals (Figure 4.5). These are primitive multicellular animals and have cellular level of organisation.
answered Jan 6, 2014 by pady_1
 

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