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:

Question

( 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