Its shell is usually spiraling. Two-shelled mollusks have two valves
joined by hinges. These open and close the valves of the shell.
Two-shelled
Single-shelled
thanks bro kung Masasagutan
mo to

Question

Its shell is usually spiraling. Two-shelled mollusks have two valvesjoined by hinges. These open and close the valves of the shell.Two-shelledSingle-shelledthanks bro kung Masasagutan mo to​

deanedeluna · Answer

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).

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Its Shell Is Usually Spiraling. Two-shelled Mollusks Have Two Valves Joined By Hinges….

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