INVERTEBRATES
PORIFERA
- SPONGES
- GENERALLY IN MARINE
- ASYMMETRIC
- CELLULAR LEVEL ORGANIZATION
- WATER TRANSPORT OR CANAL SYSTEM
- MINUTE PORES ON THE BODY WALL, TERMED AS 'OSTIA'
- OSCULUM
- SPONGOCOELS
- CHOANOCYTES
- HERMAPHRODITES
- INDIRECT DEVELOPMENT i.e,LARVAL STAGE eg. AMPHIPLASCULA, PARENHYMULA
- SPICULES
- ASEXUAL REPRODUCTION : BUDDING
- eg. SYCON (SCYPHA), EUSPONGIA (BATH SPONGE), SPONGILLA (FRESH WATER SPONGE)
AROUND 5,000 SPECIES
അഭിപ്രായങ്ങളൊന്നുമില്ല:
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