Question

Which one of the following pairs of animals comprises jawless fishes?

• A. Lampreys and eels
• B. Guppies and hagfishes
• C. Lampreys and hagfishes
• D. Mackerels and Rohu

Answer 1

The correct option is C

Lampreys and hagfishes

The correct option is C.

Explanation for the correct answer:
They have an elongated, eel-like shape and are jawless fishes without paired fins on their sides.

Explanation for the incorrect answer:
Option A:
Though Lampreys are jawless fishes while eels are the fishes containing circular mouths and jaws.

Option B:
Guppies do contain jaws but hagfishes do not contain jaws.

Option D:
Mackerels and Rohu both of these fishes do possess jaws and come under superclass Gnathostomata and class Pisces.

Final answer: Lampreys and hagfishes comprise jawless fishes.