alleryWhich pair consists of mammals despite unusual reproduction or locomotion?
AAptenodytes and Struthio
BOrnithorhynchus and Pteropus
CExocoetus and Hippocampus
DSalamandra and Ichthyophis
Answer & Solution
Correct answer: B. Ornithorhynchus and Pteropus
Ornithorhynchus is an egg-laying mammal and Pteropus is a flying mammal. Mammary glands define their class; live birth and inability to fly are not universal mammalian traits.
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