1-Explain six of the following terms with reference to theMollusca. In your answer be as comprehensive as possible regardingeach term and use illustrations. a) mantle cavity, b) radula c)ctenidia, d) Monoplacophora, e) trochophore, f) pulmonategastropod, and g) torsion.
2-Describe how the gnathostomes developed a jaw, and discuss howthis adaption has benefitted later chordate species.
