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Question
Which one of the following is not a feature of mammals?
Which one of the following is not a feature of mammals?
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Solution
The correct option is D Homodont dentition
Mammals have some key characteristic features such as four-chambered hearts, seven cervical vertebrae, muscular diaphragm, mammary gland and the presence of placenta. Mammals have thecodont teeth which mean that the teeth fit in a socket of the jawbone. The teeth are heterodont which means that there are different types of teeth. Mammals possess heterodont and not homodont.Thus, the correct answer is option C.
Mammals have some key characteristic features such as four-chambered hearts, seven cervical vertebrae, muscular diaphragm, mammary gland and the presence of placenta. Mammals have thecodont teeth which mean that the teeth fit in a socket of the jawbone. The teeth are heterodont which means that there are different types of teeth. Mammals possess heterodont and not homodont.
Thus, the correct answer is option C.
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