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

1. Pteropus and Ornithorhyncus - Viviparity
2. Garden lizard and Crocodile - Three chambered heart
3. Ascaris and Ancylostoma - Metameric segmentation
4. Sea horse and Flying fish - Cold blooded (poikilothermal)

Correct answer: Sea horse and Flying fish - Cold blooded (poikilothermal)

Solution

Sea horse and flying fish are both fishes, and fishes are cold-blooded (poikilothermal). The other options mismatch the stated feature: platypus is not viviparous, crocodile has a four-chambered heart, and roundworms are not metamerically segmented.

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