Chapter : 4. Diversity In Living Organism
Phylum - Mollusca
Phylum - Mollusca :
They have soft, unsegmented body.
Body is divided into three regions (head visceral mass and ventral foot).
Outer surface is covered by a hard calcareous shell.
Respiration is by gills called ctenidia.
The sexes are usually separate.
Examples : Chiton, Pila (Snail), Unio (Fresh water mussel), Octopus (Devil fish).
They have soft, unsegmented body.
Body is divided into three regions (head visceral mass and ventral foot).
Outer surface is covered by a hard calcareous shell.
Respiration is by gills called ctenidia.
The sexes are usually separate.
Examples : Chiton, Pila (Snail), Unio (Fresh water mussel), Octopus (Devil fish).
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