In Mollusca, a soft, spongy skin layer forms a mantle over the visceral hump, creating a mantle cavity containing gills.
In Mollusca, a soft, spongy skin layer forms a mantle over the visceral hump, creating a mantle cavity containing gills.
| Text | in phylum mollusca soft and spongy layer of skin forms a mantle over the visceral hump. The space between the hump and the mantle is called the mantle cavity in which feather like gills are present |
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