Question

The voice box of birds is called
A. Syrinx
B. Larynx
C. Pharynx
D. Trachea

Answer 1

In birds, voice is produced as air flows inside the soundbox, which is located at the base of the trachea (windpipe). As air flows inside the trachea, the sound is produced due to vibration in the wall of the soundbox.

Complete answer:
Larynx is a voice box in humans, also involved in breathing and protects the trachea against food aspiration. The larynx is located on the top of the neck. The voice box of birds is called a syrinx. The evolved vultures lack syrinx so that they can only produce hiss and grunt. But in songbirds, syrinx shows great complexity. Songbirds and other birds who can sing with two independent different voices can do so, as they are able to control the right and left half of the syrinx separately.
Hence, the correct option is (A)-Syrinx
Additional Information:
The pharynx is a hollow structure in humans and lined with moist tissue. The pharynx starts near the nose and ends at the windpipe. The pharynx is the passage of air during respiration and the passage of swallowed solids too. A laryngoscope is a device used to examine the interior of the larynx.

Note: Pharynx is actually throat. It lies between the mouth and larynx i.e., voice box. The trachea is also known as the windpipe. It is a cartilaginous tube surrounded by cartilaginous rings. It connects the larynx to the bronchi of the lungs. Moreover, the trachea allows the passage of air.