Mammalian diversity — monotremes: Monotremes are unique among mammals because they… Context: Compare reproductive modes across mammalian subclasses. Choose the correct distinguishing feature.
General Knowledge
Biology
Difficulty: Easy
Choose an option
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ALay eggs (are oviparous) despite being mammals
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BLack hair and mammary glands
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CHave gills throughout life
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DAre exclusively volant (capable of powered flight)
Answer
Correct Answer: Lay eggs (are oviparous) despite being mammals
Explanation
ConceptMonotremes (platypus, echidnas) are egg-laying mammals; they possess hair and produce milk but lack nipples (milk secreted onto skin). They are not gilled or flying mammals.
Final AnswerThey lay eggs (oviparous).