• Keneitsino Lydia
• June 5, 2026

LSD Heroin Morphine MCQs with Answers – Ultimate Guide to Master NEET Biology

LSD Heroin Morphine MCQs with Answers is an important biology topic for aspirants who want to understand drugs, addiction, plant sources, nervous system effects, and health risks in a clear and exam-focused way. LSD Heroin Morphine MCQs with Answers helps aspirants revise key concepts from human health, drug abuse, and psychoactive substances without confusion. In Class 12 Biology and competitive exams, questions related to LSD, heroin, morphine, cannabis, cocaine, and other addictive substances are often asked because they connect biology with health awareness. LSD Heroin Morphine MCQs with Answers is useful for aspirants who want to learn the source, nature, effect, and harmful consequences of these drugs.

LSD Heroin Morphine MCQs with Answers becomes easier when aspirants first understand LSD. LSD, or lysergic acid diethylamide, is a powerful hallucinogenic drug obtained from ergot fungus, commonly associated with Claviceps. LSD Heroin Morphine MCQs with Answers helps aspirants remember that hallucinogens alter perception, mood, thought patterns, and sensory experience. LSD does not act as a normal painkiller or sedative; instead, it may produce hallucinations and mental disturbance. LSD Heroin Morphine MCQs with Answers is therefore important for distinguishing hallucinogenic drugs from opioids, stimulants, depressants, and sedatives.

LSD Heroin Morphine MCQs with Answers also includes heroin, which is chemically known as diacetylmorphine. Heroin is obtained by acetylation of morphine, which comes from the latex of the unripe capsule of Papaver somniferum. LSD Heroin Morphine MCQs with Answers helps aspirants understand that heroin is an opioid drug with strong addictive potential. It may depress body functions and affect the central nervous system. LSD Heroin Morphine MCQs with Answers is also useful for remembering common names such as smack or brown sugar, which are often used in biology chapters discussing drug abuse.

Morphine is another important substance in LSD Heroin Morphine MCQs with Answers. Morphine is a natural opioid alkaloid extracted from Papaver somniferum. LSD Heroin Morphine MCQs with Answers helps aspirants revise that morphine has medical use as a painkiller and sedative, but misuse can lead to dependence and serious health problems. Unlike LSD, which mainly causes hallucinations, morphine affects pain perception and nervous system activity. LSD Heroin Morphine MCQs with Answers helps aspirants compare drug categories by their source, chemical nature, effect on the body, and potential for abuse.

Aspirants preparing LSD Heroin Morphine MCQs with Answers should focus on the difference between hallucinogens and opioids. LSD is a hallucinogen, while heroin and morphine are opioids. LSD Heroin Morphine MCQs with Answers becomes easier when aspirants use comparison charts with columns such as drug name, source, category, effect, and health risk. This method helps aspirants avoid mixing LSD with morphine or heroin. LSD Heroin Morphine MCQs with Answers also supports revision of other drug groups such as cannabinoids, stimulants, sedatives, and barbiturates, which are often studied together in human health chapters.

LSD Heroin Morphine MCQs with Answers also builds awareness about addiction and dependence. Drug abuse may begin through curiosity, peer pressure, stress, or wrong information, but repeated use can affect the brain and body severely. LSD Heroin Morphine MCQs with Answers reminds aspirants that psychoactive drugs influence neurotransmitters and alter normal nervous system function. Heroin and morphine may cause physical dependence, tolerance, withdrawal symptoms, and reduced control over use. LSD Heroin Morphine MCQs with Answers is important because biology exams often test not only drug names but also their effects on health and behaviour.

For effective preparation, LSD Heroin Morphine MCQs with Answers should be revised through short notes, flashcards, flowcharts, and source-based tables. Aspirants should connect LSD with Claviceps, morphine with Papaver somniferum, and heroin with diacetylmorphine. LSD Heroin Morphine MCQs with Answers becomes more meaningful when aspirants study drug abuse as a health issue rather than only as memorised facts. Aspirants should also revise harmful effects such as mental disturbance, addiction, respiratory depression, social problems, and long-term health damage.

LSD Heroin Morphine MCQs with Answers:

1. Marijuana, hashish, charas, and ganja are classified as:

A. Opioids
B. Cannabinoids
C. Amphetamines
D. Barbiturates

Answer: B. Cannabinoids

Explanation: Marijuana, hashish, charas, and ganja are cannabinoids obtained from the cannabis plant.

2. Euphoria and increased energy are due to

A. Cocaine
B. Heroin
C. Morphine
D. Smack

Answer: A. Cocaine

Explanation: Cocaine is obtained from the coca plant, Erythroxylum coca. It interferes with dopamine transport and commonly produces a sense of euphoria and increased energy.

3. Diacetyl morphine is also called as:

A. Crack
B. Smack
C. Amphetamine
D. Barbiturate

Answer: B. Smack

Explanation: Diacetyl morphine is also called smack or heroin. It is obtained by acetylation of morphine extracted from the latex of Papaver somniferum.

4. Morphine is extracted from

A. Cinchona officinalis
B. Papaver somniferum
C. Rauwolfia serpentina
D. Mangifera indica

Answer: B. Papaver somniferum

Explanation: Morphine is extracted from the latex of the opium poppy plant, Papaver somniferum.

5. Heroin is:

A. Diacetylmorphine
B. Triacetylmorphine
C. Tetraacetylmorphine
D. Monoacetylmorphine

Answer: A. Diacetylmorphine

Explanation: Heroin is diacetylmorphine. It is a semi-synthetic opiate narcotic obtained by acetylation of morphine.

6. Liver cirrhosis is caused by:

A. Excess alcoholism
B. No alcohol
C. Due to bacterial infection
D. Due to viral infection

Answer: A. Excess alcoholism

Explanation: Liver cirrhosis may result from chronic liver damage, and excess alcoholism is one of the common causes.

7. Reserpine is obtained from:

A. Rauwolfia serpentina
B. Coffee plant
C. Tea plant
D. Pea plant

Answer: A. Rauwolfia serpentina

Explanation: Reserpine is an indole alkaloid obtained from the dried roots of Rauwolfia serpentina.

8. The drugs which do not develop physiological dependence are

A. Opiates
B. Sedatives
C. Stimulants
D. Hallucinogens

Answer: C. Stimulants

Explanation: As per the given answer key, stimulants are marked as drugs that do not develop physiological dependence.

9. The drug belladonna is obtained from

A. Atropa
B. Opium
C. Rauwolfia
D. Solanum

Answer: A. Atropa

Explanation: Belladonna is obtained from Atropa belladonna, a plant of the nightshade family, Solanaceae.

10. Quinine is obtained from

A. Bark of Cinchona
B. Root of Cinchona
C. Wood of Cinchona
D. Leaves of Cinchona

Answer: A. Bark of Cinchona

Explanation: Quinine is obtained from the bark of Cinchona and is used in the treatment of malaria.

11. Mescaline, an alkaloid, is found in:

A. Lophophora williamsii
B. Claviceps purpurea
C. Psilocybin Mexicana
D. Piptadenia peregrina

Answer: A. Lophophora williamsii

Explanation: Mescaline is obtained from the cactus Lophophora williamsii, commonly known as peyote.

12. Cyclosporine and endospores are the drugs that are used as

A. Anti-retroviral drugs
B. Immunosuppressants
C. Immunomodulators
D. Immunovaccines

Answer: B. Immunosuppressants

Explanation: Cyclosporine is used as an immunosuppressant to suppress immune responses, especially in organ transplantation.

13. Which of the following drugs is used as an immunosuppressant to lower the body’s ability to reject a transplanted organ?

A. Hashish
B. Opium
C. Morphine
D. Cyclosporine

Answer: D. Cyclosporine

Explanation: Cyclosporine is used as an immunosuppressant to reduce the body’s ability to reject transplanted organs.

14. Which drug causes altered thought perceptions and hallucinations?

A. Hashish
B. Opium
C. Morphine
D. Barbiturates

Answer: A. Hashish

Explanation: Hashish may cause altered thought perception and hallucinations.

15. Medicine for curing respiratory problems is obtained from which plant?

A. Ephedra
B. Calotropis
C. Eucalyptus
D. Cannabis

Answer: A. Ephedra

Explanation: Medicine for respiratory problems is obtained from Ephedra.

16. What is the most commonly used analgesic during self-medication by persons?

A. Aspirin
B. Ibuprofen
C. Acetaminophen
D. All of these

Answer: D. All of these

Explanation: Aspirin, ibuprofen, and acetaminophen are commonly used analgesics. Acetaminophen, also known as paracetamol, is widely used during self-medication.

17. Commercial opium is obtained from which part of the opium poppy plant?

A. Mature leaves
B. Mature seeds
C. Unripened capsule
D. Germinated plants

Answer: C. Unripened capsule

Explanation: Commercial opium is obtained from the latex of the unripened capsule of the opium poppy plant.

18. Which alkaloids are present in opium?

A. Codeine
B. Morphine
C. Pethidine
D. All of these

Answer: D. All of these

Explanation: Codeine, morphine, and pethidine are alkaloids associated with opium.

19. What is the correct representation of the alkaloids obtained from opium?

A. Morphine > Codeine > Pethidine
B. Morphine < Codeine < Pethidine
C. Morphine > Codeine > Pethidine
D. Morphine < Codeine < Nicotine

Answer: A. Morphine > Codeine > Pethidine

Explanation: The correct representation of the alkaloids obtained from opium is Morphine > Codeine > Pethidine.

20. Which of the following is a psychedelic drug?

A. LSD
B. Marijuana
C. Bhang
D. All of these

Answer: D. All of these

Explanation: LSD, marijuana, and bhang are classified as psychedelic drugs.

21. Which of the following is a matching pair of a drug and its category?

A. Amphetamines – Stimulant
B. Lysergic acid – Narcotic dimethyl amide
C. Heroin – Psychotropic
D. Benzodiazepam – Pain killer

Answer: A. Amphetamines – Stimulant

Explanation: Amphetamines belong to the stimulant category.

22. Which of the following is correct for LSD, morphine, and charas respectively?

A. Claviceps, Papaver somniferum, Cannabis
B. Claviceps, Cannabis, Papaver somniferum
C. Claviceps, Cannabis, Rauwolfia
D. Claviceps, Fusarium, Cannabis

Answer: A. Claviceps, Papaver somniferum, Cannabis

Explanation: LSD is obtained from ergot fungus, Claviceps. Morphine is derived from Papaver somniferum, and charas is obtained from Cannabis.

23. Addiction of LSD will eventually lead to:

A. Hallucination
B. Damage to lungs
C. Mental and emotional disturbances
D. Damage to kidneys

Answer: A. Hallucination

Explanation: LSD addiction may lead to hallucinations, altered thoughts, feelings, and perceptions.

24. Most of the plant products used for drugs are

A. Alkaloids
B. Fibers
C. Resin
D. Oil

Answer: A. Alkaloids

Explanation: Many plant products used for drugs are alkaloids, which are biologically active compounds.

25. Tobacco smoke contains

A. CO₂, hydrocarbons, and tar
B. CO₂ and tar
C. CO, polycyclic aromatic hydrocarbons, and tar
D. CO₂, CO, and tar

Answer: C. CO, polycyclic aromatic hydrocarbons, and tar

Explanation: Tobacco smoke contains carbon monoxide, tar, nicotine, and polycyclic aromatic hydrocarbons.

26. An alkaloid that arrests cell division is obtained from

A. Chrysanthemum
B. Colchicum
C. Dalbergia
D. Crocus

Answer: B. Colchicum

Explanation: Colchicine is an alkaloid obtained from Colchicum. It arrests cell division by stopping mitosis at metaphase.

27. Which part of poppy plant is used to obtain the drug “smack”?

A. Flowers
B. Latex
C. Leaves
D. Roots

Answer: B. Latex

Explanation: Smack, also called heroin or brown sugar, is obtained by acetylation of morphine extracted from the latex of the unripe capsule of Papaver somniferum.

28. What is the source and use of molecule A as shown in the passage?

A. Atropa belladonna, produces hallucinations
B. Papaver somniferum, sedative and pain killer
C. Erythroxylum coca, accelerates the transport of dopamine
D. Cannabis sativa, depressant and slows down body functions

Answer: B. Papaver somniferum, sedative and pain killer

Explanation: The source of molecule A is Papaver somniferum, and it is used as a sedative and pain killer.

29. Which carcinogen is present in cigarette smoke?

A. Benzopyrene
B. Nicotine
C. Carbon monoxide
D. All of these

Answer: A. Benzopyrene

Explanation: Benzopyrene is a carcinogenic compound present in cigarette smoke.

30. What is ergotamine tartrate extracted from Claviceps used for?

A. Bodyache
B. Headache
C. Fever
D. Severe stomach pain

Answer: B. Headache

Explanation: Ergotamine tartrate extracted from Claviceps is used for the treatment of headaches, especially migraine headaches.

31. What drug was the young addict possibly taking based on the symptoms described in the passage?

A. Amphetamine
B. Marijuana
C. Pethidine
D. Valium

Answer: D. Valium

Explanation: Based on symptoms such as depressed brain activity, calmness, relaxation, and drowsiness, the young addict was possibly taking Valium.

32. Which pair is not correctly matched?

A. Streptomyces – Antibiotic
B. Serratia – Drug addiction
C. Spirulina – Single cell protein
D. Rhizobium – Biofertilizer

Answer: B. Serratia – Drug addiction

Explanation: Serratia is not correctly matched with drug addiction. Streptomyces is associated with antibiotics, Spirulina with single-cell protein, and Rhizobium with biofertilizer.

33. What drug was the drug addict possibly taking based on the symptoms of increased appetite, chest pain, redness of eyes, and increased urination?

A. Cannabis compounds
B. LSD
C. Cocaine
D. Amphetamines

Answer: A. Cannabis compounds

Explanation: The symptoms described, including increased appetite and redness of eyes, suggest the use of cannabis compounds.

 

Conclusion on LSD Heroin Morphine MCQs with Answers

In conclusion, LSD Heroin Morphine MCQs with Answers is a valuable topic for aspirants preparing for Class 12 Biology, NEET, nursing entrance exams, and other competitive tests. It improves understanding of hallucinogens, opioids, plant sources, drug effects, addiction, dependence, and health awareness. LSD Heroin Morphine MCQs with Answers also helps aspirants answer biology questions with better accuracy and confidence while developing a responsible understanding of drug abuse and its consequences.