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Regarding reproduction in sponges:

( a ) reproduce asexually by fragmentation
( b ) Fertilisation is external
( c ) development is direct having a larval stage
( d ) eggs and sperms are not produced by the same individual
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1 Answer

(A) is the right answer.

In Sponges : Digestion is intracellular. The body is supported by a skeleton made up of spicules or spongin fibres. Sexes are not separate (hermaphrodite), i.e., eggs and sperms are produced by the same individual. Sponges reproduce asexually by fragmentation and sexually by formation of gametes. Fertilisation is internal and development is indirect having a larval stage which is morphologically distinct from the adult.
answered Jan 3, 2014 by pady_1
 

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