it is a mollusk that belongs to the class Gastropod. it has four noses , and two pairs of retractable tentacles on the top of the head.
Answers
Answer:
Phylum Mollusca is the predominant phylum in marine environments. It is estimated that 23 percent of all known marine species are mollusks; there are over 75,000 described species, making them the second most diverse phylum of animals. The name “mollusca” signifies a soft body, since the earliest descriptions of mollusks came from observations of unshelled cuttlefish. Mollusks are predominantly a marine group of animals; however, they are known to inhabit freshwater as well as terrestrial habitats. Mollusks display a wide range of morphologies in each class and subclass, but share a few key characteristics, including a muscular foot, a visceral mass containing internal organs, and a mantle that may or may not secrete a shell of calcium carbonate (Figure 1).
The illustration shows a cross-section of a snail. The body of the snail is called the visceral mass. The mouth leads to a crop, then to the stomach, which is toward the back of the animal. The intestines are located above the stomach. The intestines continue forward, and empty into a cavity above the front part of the visceral mass. Two nerve cords wrap around the esophagus and extend back along the bottom of the animal. The gill is located in the cavity in the shell, and connects to the heart in the visceral mass. The coelom is near the heart. The visceral mass is surrounded by a mantle. A shell covers the mantle.
Answer:
the answer of this question is same as written above