Question

Which of the following statements is true ?

• A. All living members of class cyclostomata are parasites on some fishes
• B. There are about 2000 species in clase osteichthyes
• C. Ciona belongs to the subphylum cephalochordata
• D. Arthropods are diploblastic animals

Answer 1

Answer: (A)

Correct answer is (a) All living members of class cyclostomata are parasites on some fishes