Question

Salivary mass of earthworm occurs in

• A. Dorsal wall of buccal cavity
• B. Ventral wall of buccal cavity
• C. Pharyngeal wall
• D. Gizzard

Answer 1

The correct option is C Pharyngeal wall

The dorsal chamber is also called salivary chamber which contains pharyngeal gland that is composed of many chromophil cells. Dorsally pharyngeal gland is lined by villi. The chromophil cells produce saliva containing proteolytic enzymes and mucin. Mucin makes the food soft and protease converts protein into an amino acid. The ventral chamber is a conducting chamber which conducts digested or undigested food material from the pharynx to the oesophagus.

So the correct answer is 'Pharyngeal wall'.