Minute particles made up of $CaCO_3$ and protein present in the internal ear are called . . . . . . .

During the hearing mechanism in humans,the sense cells which perceive the sound vibrations are present in:

Below is the diagram of the sectional view of the cochlea of the human ear. Identify $A$ and $E$. Choose the correct option.

The fluid that fills the membranous labyrinth of the rabbit is called .....

The internal ear of a rabbit is derived from which of the following germ layers?

Arrange the following events in a correct order that lead to the formation of an auditory impulse in human ears from the codes given below:
$I.$ Vibration is transferred from the malleus to the incus and then to stapes
$II.$ Basilar membrane moves up and down
$III.$ Nerve impulse is transmitted by cochlear nerve to auditory cortex of brain for impulse analysis and recognition
$IV.$ Sound waves pass through ear canal
$V.$ Stereocilia of hair cells of organ of Corti rub against tectorial membrane
$VI.$ Sound waves cause ear drum to vibrate
$VII.$ Nerve impulse is generated
$VIII.$ Vibrations move from fluid of vestibular canal to the fluid of tympanic canal
$IX.$ Membrane at oval window vibrates