Q139 / 180 · NEET 2018 · Zoology

Which of the following terms describe human dentition?

  • A
    Pleurodont, Monophydont, Homodont
  • Correct answer
    B
    Thecodont, Diphyodont, Heterodont
  • C
    Thecodont, Diphyodont, Homodont
  • D
    Pleurodont, Diphyodont, Heterodont

Solution

Human dentition is thecodont, diphyodont and heterodont. In humans, two types of teeth are found: milk or deciduous teeth and permanent teeth. Thus, they have diphyodont teeth. The teeth are thecodont, i.e. they remain embedded in the sockets of the jaw bones. Men have four types of teeth; incisors, canines, premolars and molars, i.e., heterodont teeth.

Pleurodont teeth refers to the dentition where teeth are fused to the inner edge of the jawbone. This type of dentition is normally found in reptiles.
Homodont refers to only one or similar type of teeth. It is found in porpoise.

Hence, the correct answer is option: 'B'.

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