**Question:** Ganja is obtained from:

A. Cannabis sativa plant
B. Mango trees
C. Papaya trees
D. Aloe vera plant

**Core Concept:** Ganja is a psychoactive substance derived from the Cannabis sativa plant. It contains psychoactive compounds called cannabinoids, primarily delta-9-tetrahydrocannabinol (THC), which is responsible for its psychoactive effects.

**Why the Correct Answer is Right:** Ganja is obtained from Cannabis sativa, a plant species known for its psychoactive compounds, particularly THC. This plant has been cultivated for its medicinal and recreational uses for centuries, and THC is responsible for the psychoactive effects of cannabis products.

**Why Each Wrong Option is Incorrect:**

A. Mango trees (Mangifera indica) are unrelated to cannabis and produce mangoes, not ganja.
B. Papaya trees (Carica papaya) also do not produce ganja; papaya fruits contain papain, which is an enzyme used in meat tenderizers.
C. Papaya trees are incorrect as they produce papaya fruit, which contains papain, an enzyme used in meat tenderizers, not ganja.
D. Aloe vera plants (Aloe barbadensis) are known for their medicinal properties, but they do not produce ganja or any psychoactive compounds.

**Clinical Pearl:** Cannabis sativa has been used for its medicinal properties, such as pain relief, anti-inflammatory effects, and management of epilepsy. It is essential for students to understand the correct plant source (Cannabis sativa) to avoid confusion and misinformation regarding its origin.

**Correct Answer:** A. Cannabis sativa (ganja)