Describe opioid drugs.

Define opioid.

Name three categories of drugs.

Which of the following is an opioid drug?

Name an opioid drug and its source plant. How does the drug affect the human body?

Define opioids. Give their source and effects. Why is heroin called most dangerous drug?

Describe the consumptive use value of biodiversity as food, drugs, medicines, fuel, fiber with suitable examples.

What are psychotropic drugs?

Name four types of psychotropic drugs.

Explain sources and biological effects of four categories of drugs.