Biology Practice Problems Lophotrochozoans Practice Problems Solution: We are somewhat flattened and our dorsal surface i...

Solution: We are somewhat flattened and our dorsal surface is convex and covered with 8 articulating plates. We occur on rocky surfaces in the intertidal regions and our radula scrapes algae off the rocks. Our mantle forms a girdle around the margin of our plates and on each side of the foot is a row of gills suspended from the roof of the mantle cavity. Which of the following has our correct taxonomy?A. Phylum Mollusca, Class GastropodaB. Phylum Nematoda, Class BivalviaC. Phylum Mollusca, Class PolyplacophoraD. Phylum Mollusca, Class Bivalvia

Problem

We are somewhat flattened and our dorsal surface is convex and covered with 8 articulating plates. We occur on rocky surfaces in the intertidal regions and our radula scrapes algae off the rocks. Our mantle forms a girdle around the margin of our plates and on each side of the foot is a row of gills suspended from the roof of the mantle cavity. Which of the following has our correct taxonomy?

A. Phylum Mollusca, Class Gastropoda

B. Phylum Nematoda, Class Bivalvia

C. Phylum Mollusca, Class Polyplacophora

D. Phylum Mollusca, Class Bivalvia

Solution

From the given description, it should be noted that the organism has radula, which is unique for mollusks. Mollusks are invertebrates known to have three main parts: the foot, the visceral mass (including the organs), and the mantle.

Solution BlurView Complete Written Solution