Is salivating at the sight of a lemon unconditioned respons?

Salivating at the sight of a lemon is considered a conditioned response rather than an unconditioned response. An unconditioned response is a natural reaction to an unconditioned stimulus, such as salivating when tasting something sour. However, if someone has learned to associate the sight of a lemon with the taste of sourness, their salivation in response to just seeing the lemon is a learned behavior.