EVERYDAY SCIENCE

Detailed explanation-1: -The visceral mass is present above the foot in the visceral hump. This includes digestive, nervous, excretory, reproductive, and respiratory systems. Mollusk species that are exclusively aquatic have gills for respiration, whereas some terrestrial species have lungs for respiration.

Detailed explanation-2: -One of the most distinctive anatomical features characteristic of mollusks is a true coelom, a body cavity that contains most of the vital organs. The digestive tract, heart, liver, and reproductive organs are all housed inside the coelom.

Detailed explanation-3: -In general, mollusks have 3 body regions: a head, a visceral mass, and a “foot.” The head contains the sense organs and “brain, ” while the visceral mass contains the internal organs. The “foot” is the muscular lower part of the body which is in contact with the substrate.

Detailed explanation-4: -All mollusks have: a visceral mass containing internal organs, including the digestive tract, paired kidneys, and reproductive organs. a mantle that surrounds but does not cover entirely the visceral mass and secretes a shell (if one is present). The mantle also contributes to formation of gills or lungs.

Detailed explanation-5: -Answer and Explanation: A mollusk’s body organs are primarily contained within the visceral mass, also called the visceral hump. The general contents include the digestive, reproductive, and excretory systems. It also includes the mantle, which is largely responsible for respiration by way of tiny gills.