Which of the following is NOT included in the definition of Marihuana?

The definition of marihuana typically excludes certain parts of the cannabis plant and its derivatives that do not have psychoactive properties or are not intended for consumption in a therapeutic or recreational context. In this scenario, the mature stalks of the plant and oil made from the seeds are not considered marihuana because they do not contain significant levels of tetrahydrocannabinol (THC), the compound responsible for the psychoactive effects. Hemp, as defined by the Agriculture Code, similarly refers to cannabis plants that contain less than 0.3% THC, which also falls outside the classic definition of marihuana.

The resin extracted from the plant is included in the definition because it is often concentrated and contains higher levels of THC, making it psychoactive. Therefore, the correct answer aligns with the broader legal context of distinguishing this plant from its non-psychoactive components. Hence, the correct choice indicates something that is not classified as marihuana, as it is not associated with its intended uses or effects.