The ear ossicles in the human ear are:

Match the columns and select the correct option:

$(a)$ Organ of Corti	$(i)$ Connects middle ear to pharynx
$(b)$ Cochlea	$(ii)$ Coiled portion of the labyrinth
$(c)$ Eustachian tube	$(iii)$ Attached to the oval window
$(d)$ Stapes	$(iv)$ Located on the basilar membrane

$(a)\quad (b)\quad (c)\quad (d)$

The membranous labyrinth is enclosed in the:

The chief function of the utriculus in vertebrates is

Comment upon the role of the ear in maintaining the balance of the body and posture.

Select the correct sequence for the mechanism of hearing.
$I -$ Sound waves,$II -$ Oval window,$III -$ Hair cells press against the tectorial membrane,$IV -$ Auditory cortex,$V -$ Auditory nerve,$VI -$ Waves in lymph,$VII -$ Tympanic membrane,$VIII -$ Movement in basilar membrane,$IX -$ Ear ossicles,$X -$ Generation of nerve impulses.