Externally, nostrils.
Internally, Lungs.
Snakes have no diaphragm.
Snakes breath with lungs. Some live under water, but they do not have gills.
Although they have no external ears - they DO have an ear-drum. They pick up vibrations through the ground, which travel along the jawbone to the inner-ear.
Heart
nose
the answer is surely lungs
It's a 'sensory organ'. It basically takes the form of two 'pockets' in the roof of the snakes mouth. When the snake flicks out its tongue, microscopic scent particles stick to it. Withdrawing the tongue back into its mouth, the tips are inserted into the Jacobson's organ, and the snake's brain decodes the information.
A snake doesn't really 'smell' to say the least. They have a special organ in the nasal cavity of their skulls called the Jacobson's Organ. When they flick their tongue out, they use that organ to sense any nearby prey or threat. So in a sense, they 'smell' while they taste the air.
Jacobson's Organ
snake doesn't have any ears. but it can hear with its tongue.
snakes does not have ears. so they hear by the vibration from the air
Hognose or adder
The organ used to hear is the ear.
what is the organ of movement in snake
the Jacobson's organ
The tongue is used to capture the air particles around the snake. It (the tongue) is rubbed on a small organ in the roof of the mouth called "vomeronasal organ", or "Jacobson's organ. From this the snake can perceive if there is prey or predators around it
the organ is the loin.
A snake "hears" by sensing vibrations in the ground.
the nose
you hear snake when you say ekans backwards
The Jacobson's organ, or scientifically speaking, the Vomeronasal organ.
skull
Jacobson's organ