Mammals show heterodont dentition. Give a reason.

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Solution

$∙$ In mammals, four types of teeth - incisors, canines, molars and premolars are present, so they have heterodont dentition.
$∙$ When different types of teeth are developed to suit their varying feeding habits then this is called heterodont dentition.
$∙$ Incisors- These are the front teeth that are used for biting and cutting the food.
$∙$ Canines- These are the corner teeth that are used for gripping and tearing the food.
$∙$ Premolars- These have flat surfaces and these are used for tearing and crushing.
$∙$ Molars- These are large and are used for chewing the food.

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Study the following dental formula and then answer the questions that follow :

$i \frac{3}{4}$ $c \frac{0}{0}$ $p m \frac{0}{1}$ $m \frac{1}{1}$

(a) State the total number of teeth present in the dentition.

(b) Is the dentition that of a carnivore or herbivore ? Give a reason to support your answer.

(d) Give the dental formula of an adult human being.

Mammals have heterodont dentition with different types of teeth that are not specialized to match specific eating habits.

What is meant by dentition? Explain the following terms with respect to the dentition.

(b) Heterodont

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