Question

How do aquatic mollusks breathe?

Answer 1

Molluscs are fundamentally oceanic living beings. Land snails and slugs don't have gills; they breathe utilizing a mantle cavity that has a huge surface area fixed with veins.Gills help in return of respiratory gases among blood and surrounding water.

Complete answer:
Essentially all molluscs inhale by gills that are called ctenidia (comb gills) on account of their brush-like shape. In earthbound molluscs this breath organ is decreased, yet at the same time breath happens in the pallial cavity.
Mollusks duplicate explicitly. Slugs and snails are bisexuals (having both male and female organs), yet they should even now mate to prepare their eggs. Most oceanic mollusks lay eggs that incubate into little, free-swimming hatchlings called veliger.
Gills are utilized to exchange oxygen and carbon dioxide in breath. Cilia on the gills make a progression of oxygenated water through the mantle cavity, carting away carbon dioxide and nitrogenous wastes. Bivalves like shellfish and mollusks, have significantly amplified gills that they use for both breath and filter feeding. Mollusk gills are called ctenidia, and they consist of a progression of slim fibers of tissue that look like the teeth of a brush. Earthly mollusk species have crude lungs that inhale oxygen straightforwardly from the air around them. As we examined before, the gills are situated in the water-filled mantle cavity

Note: Aquatic molluscs are discovered both in marine and new water living spaces: they generally have gills for respiration. Aquatic mollusks, for example, snails, shellfishes, and octopus normally inhale utilizing gills inside their mantle cavity. Tubes called siphons acquire water and out of the body.