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Regarding reproduction in sponges : Match the following and choose the most appropriate option:

A. Fertilisation 1. not separate
B. Sexes 2. separate
C. reproduce asexually 3. external
D. reproduce sexually 4. internal
E. development 5. indirect
6. fragmentation
7. formation of gametes
8. direct
9. hermaphrodite

( A ) A-3; B-2; C-6; D-7; E-8
( B ) A-3; B-2; C-7; D-6; E-5
( C ) A-3; B-2,9; C-6; D-7; E-8
( D ) A-4; B-1,9; C-6; D-7; E-5
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(D) is the right answer.

In Sponges : 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 Apr 2, 2014 by pady_1

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