Question

Which one of the following pairs of animals are similar to each other for the feature stated against them?

• A. Pteropus and Ornithorhyncus - viviparity
• B. Garden lizard and crocodile-three chambered heart
• C. Ascaris and Ancylostoma - metameric segmentation
• D. sea horse and flying fish - cold blooded (poikilothermal)

Answer 1

Answer: (D)

sea horse and flying fish - cold blooded (poikilothermal)

Answer 2

Sea horse and flying fish are fishes and fishes are cold-blooded animals, i.e., the temperature of their body varies with the environment. Ornithorhyncus is oviparous, crocodile has $4$-chambered heart, Ascaris and Ancylostoma do not show metameric segmentation.