Question

While sampling marine plankton in a lab, a student encounters large numbers of fertilized eggs. The student rears some of the eggs in the laboratory for further study and finds that the blastopore becomes the mouth. The embryo develops into a trochophore larva and eventually has a coelom and a hemocoel. To which group of organisms did these eggs likely belong?.

Answer 1

Mollusk, Any member of the enormous phylum (Mollusca) of invertebrate animals with a soft, unequally segmented body that is typically contained in a calcareous shell is referred to as a shellfish.

What is Mollusk?

Any soft-bodied animal of the phylum Mollusca that is entirely or partially enclosed in a calcium carbonate shell that is secreted by a soft mantle surrounding the body is referred to as a mollusk, also written mollusk.

Any member of the enormous phylum (Mollusca) of invertebrate animals with a soft, unequally segmented body that is typically contained in a calcareous shell is referred to as a shellfish.

The term used by Aristotle to describe cuttlefish is where the word "Mollusca" originates. Mollusk is a soft word. Both the deep sea and the land are home to these species. They come in a variety of sizes, from microscopic organisms to ones 20 meters long.

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