Question

Select in incorrect statement :
a) alimentary canal begins with an anterior cavity called buccal cavity.
b) tooth is embedded in a socket of mandible bone only
c) human shows strict diphyodont type of dentition .
d) oesophagus and the trachea open into the phatynx

• A. a, b , c & d
• B. a, b & c
• C. a, c & d
• D. a, b & d

Answer 1

The correct option is A a, b , c & d

Alimentary canal is also called as digestive tract. It starts in the mouth followed by buccal cavity and ends at the anus. The digestion starts in the anterior cavity called buccal cavity. Teeth are embedded in a socket of mandible (lower jaw) and maxilla (upper jaw). These sockets are called as tooth sockets. Human shows both diphyodont and monophyodont types of dentition. In diphyodont dentition, there are 2 sets of teeth, namely deciduous and permanent set. In monophyodont dentition, there is only 1 set of teeth. In humans, molar teeth show monophyodont dentition and rest teeth show diphyodont dentition. Pharynx is part of both digestive and respiratory system. Pharynx opens into oesophagus in digestive system and larynx in respiratory system.

Thus, the correct answer is 'a, b , c & d.'