Question

1. what are shellfish?

a lobsters, but not clams, oysters, or mussels
skates and rays
fish with white shells
clams, oysters, and mussels, but not lobsters

1. what is the general term for all shellfish that have soft bodies and no skeletons?

a calamari
mollusks
abalo nes
crustaceans

1. which of the following is not a mollusk?

a squid
oyster
shrimp
octopus

1. which is an example of a fatty round fish?

a lemon sole
atlantic cod
striped bass
atlantic salmon
5.

Explanation:

Question 1

Shellfish include both crustaceans (like lobsters) and mollusks (like clams, oysters, mussels). But the options here—option D says clams, oysters, mussels (mollusks) but not lobsters? Wait, no, actually shellfish has two main groups: crustaceans (lobsters, shrimp) and mollusks (clams, oysters, mussels). Wait, maybe the question's options have a different take. Wait, no—wait, maybe the intended answer is that shellfish includes clams, oysters, mussels (mollusks) and lobsters (crustaceans), but the options: let's recheck. Option D: "clams, oysters, and mussels, but not lobsters"—no, that's wrong. Wait, maybe I misread. Wait, the options: A: lobsters, not clams etc. B: skates and rays (those are fish, not shellfish). C: fish with white shells (nonsense). D: clams, oysters, mussels, not lobsters. Wait, maybe the question considers shellfish as mollusks (clams, oysters, mussels) and not crustaceans (lobsters)? But that's incorrect. Wait, maybe the question's definition is different. Alternatively, maybe the answer is D? Wait, no—wait, maybe the question is from a culinary context where sometimes shellfish is divided, but no. Wait, maybe I made a mistake. Wait, let's think again. Skates and rays are fish, not shellfish. Fish with white shells is wrong. Option A: lobsters but not clams etc.—no, because clams etc. are shellfish. So the correct answer should be that shellfish includes clams, oysters, mussels (mollusks) and lobsters (crustaceans), but the options don't have that. Wait, maybe the question's options have an error, but among the options, D is the only one that lists mollusks (clams, oysters, mussels) which are shellfish, while A lists lobsters (also shellfish) but excludes mollusks. So between A and D—wait, maybe the question considers shellfish as mollusks (clams, oysters, mussels) and not crustaceans (lobsters) in this context. So then D would be correct? Wait, no, that's not accurate, but among the options, D is the only one that lists true shellfish (mollusks) and excludes non-shellfish (skates, rays, or wrong definitions). So the answer is D.

Mollusks are shellfish with soft bodies and no skeletons (they have shells or not, like squid has no shell but is a mollusk). Calamari is squid (a mollusk), abalones are mollusks, crustaceans have exoskeletons (skeletons). So the general term for shellfish with soft bodies and no skeletons is mollusks.

Mollusks include squid, oyster, octopus. Shrimp is a crustacean (has exoskeleton, segmented body), not a mollusk. So shrimp is not a mollusk.

Answer:

D. clams, oysters, and mussels, but not lobsters

Question 2