<prompt> Function of hypothalamus isAlone or only organ which controls, circadian rhythmInvolved in thirst and water controlInvolved in motor functionRelated with sexual behaviour in animals  <response>: B Involved in thirst and water control Suprachiasmatic nuclei of hypothalamus and pineal gland have role in controlling circadian rhythm in mammals, Motor activity is controlled by motor cortex and cerebellum, Sexual behavior in animal is controlled by Amygdala Hypothalamus has well documented role in water and thirst control supra optic nucleus 