A snail’s shell grows through the secretion of calcium carbonate by the mantle. As the snail increases in size, the mantle continuously adds new layers to the shell, making it larger.
Discussion Forum Latest Questions
Non-living things cannot show genuine responses to stimuli. Any apparent response is due to mechanical or chemical processes rather than biological reactions, as non-living entities lack the complexity of living systems.
A snail’s shell helps maintain homeostasis by preventing excessive water loss and protecting the snail from environmental changes. It aids in regulating the internal moisture levels essential for the snail’s survival.
Key characteristics indicating a creature is alive include growth, reproduction, responsiveness to stimuli, and the ability to maintain internal stability. These traits are essential for distinguishing living creatures from non-living things.
Shells do not move because they are hard, non-living structures. Movement in living creatures is generally facilitated by their muscles and other biological systems, while the shell remains stationary for protection.