Question

the baracuda belongs to the group of fishes called
select one:
a. osteichthyes
b. platyhelminthes
c. chondrichthyes

to what class does the cleaner shrimp belong?
select one:
a. echinoderms
b. crustaceans
c. bivalves

Explanation:

1. For the barracuda question: Osteichthyes are bony fish, which barracudas are; Platyhelminthes are flatworms (not fish), and Chondrichthyes are cartilaginous fish (like sharks) which barracudas are not.
2. For the cleaner shrimp question: Cleaner shrimp are crustaceans, a group of arthropods with exoskeletons and jointed appendages; Echinoderms include starfish, and Bivalves are mollusks like clams.

Answer:

1. a. Osteichthyes
2. b. Crustaceans