The .......... collects sound from surroundings.

The correct answer is Pinna.

Important Points 

• Ear is the sense organ for hearing.
• Ear also maintains the balance of the human body.
• The three parts of the ear are the external ear, middle ear, and inner ear.
• The human external ear consists of the pinna and external auditory canal.
  • The pinna collects sound from the surroundings.
    • The pinna is also called auricle.
  • The external auditory canal leads inwards and extends up to the tympanic membrane.

Additional Information 

• The tympanic membrane separates the external ear from the middle ear.
  • The malleus is attached to the tympanic membrane.
• The part of the inner ear which helps for hearing is called the cochlea.
  • The stapes bone is attached to the oval window of the cochlea.
• The nerve impulses are transmitted via auditory nerves to the auditory cortex of the brain.

Image of Ear Diagram: