In most mammals, including humans, two sets of teeth are formed during their lives: the first set of temporary milk teeth or dentition, which is later replaced by a set of permanent or adult teeth. What is this type of dentition called?

Correct option is B

Ans. (b)
Sol. The type of dentition in which two sets of teeth are formed during a lifetime is called Diphyodont dentition. In most mammals, including humans, the first set of teeth (milk teeth or deciduous teeth) is later replaced by permanent teeth. This ensures proper development of the jaw and effective chewing functions throughout life.
Explanation of each option:
· (a) Thecodont – Incorrect, as thecodont dentition refers to teeth being set in sockets (antra) of the jawbone.
· (b) Diphyodont – Correct answer. It refers to the presence of two successive sets of teeth (milk teeth and permanent teeth).
· (c) Pyloric – Incorrect, as pyloric refers to the stomach’s pylorus region, not dentition.
· (d) Fundic – Incorrect, as fundic refers to the fundus region of the stomach, not teeth development.