Question

A snail moves with the help of its
A. Shell
B. Wings
C. Bristles
D. Feet

Answer 1

Snails belong to the phylum of molluscs and order gastropods. They have a soft body covered by a hard shell. Snails are slow-moving creatures and have a long muscular foot that secretes mucus. The mucus secretion reduces friction and protects the soft body's creature from any mechanical injury.

Complete answer: Snails are a small group of molluscs that belong to the order of gastropods. It includes land snails, slugs, sea snails, etc. Snails that do not have a protective shell are known as slugs, and snails with a softshell are called semi slugs. Snails are soft-bodied creatures that rely on the protection of the shell. Land snails possess a muscular foot, a mantle, tentacles on their head, a radula, and a primitive brain. As far as reproductive capacity is concerned, they show dioecious and hermaphrodite conditions. The main mode of locomotion for snails is using their foot. They have one long muscular foot which they use to propel them forward. It generates a wave-like motion in its foot which enables movement and or locomotion. Another aspect of the foot is that it secretes a mucus secretion which causes a slimy layer to build up over its foot. This secretion enables the snails to move by reducing friction between its foot and the surface. Another reason for the mucus secretion is that it prevents injury to the foot from any sharp objects on the surface and helps maintain moisture on the exposed surface of the foot and prevents drying out of the body.
Therefore, the correct answer is option D.

Note: The wave motion in its foot is caused by continuous contraction and relaxation of the muscle beginning at the top and at the bottom end of the foot. It has only one foot, and the mucus it secretes is of commercial value in the field of cosmetology as it improves moisture retention of the skin the same way it does in the case of snails.