B.Pharm Introduction to Pharmacognosy Important Questions PDF 

INTRODUCTION TO PHARMACOGNOSY – BP105T UNIT-WISE Important Questions, B.Pharma 1st Semester.

Unit – 1

1. Very Short Answers Questions

★1. Who coined the term “Pharmacognosy” and from which two Greek root words is it derived?
★2. Define a “Crude Drug” according to pharmacognostic principles.
3. What is the historical significance of the ancient Egyptian medical text Papyrus Ebers?
4. Name the two foundational classical texts of Indian Ayurveda and identify the ancient scholar revered as the “Father of Surgery.”
★5. Name the specific fungal organism and the discoverer responsible for the landmark discovery of Penicillin in 1928.
6. What is the botanical source and primary cellular mechanism of action of the antineoplastic diterpene Paclitaxel (Taxol)?

★7. Which unique chemical bridge in the sesquiterpene lactone Artemisinin is responsible for its potent antimalarial activity?
8. Name the four Vitamin K-dependent plasma coagulation factors whose post-translational activation is inhibited by Warfarin.
9. Differentiate between “Official” and “Non-Official” drugs in pharmacognosy.
10. What is the fundamental histological difference between “Organized” and “Unorganized” crude drugs?
11. Name two medicinal secondary metabolites commercially produced via in-vitro plant tissue culture (PTC) bioreactors.
★12. Name the statutory regulatory compendium published under the Ministry of AYUSH that governs the quality standards of Ayurvedic drugs in India.

2. Short Answer Questions

★1. Differentiate between Organized (Cellular) and Unorganized (Acellular) crude drugs with two distinct morphological examples of each.
2. Outline the historical evolution of Pharmacognosy during the Greco-Roman era, highlighting the key contributions of Hippocrates, Theophrastus, Dioscorides, and Galen.
★3. Describe Plant Tissue Culture (PTC) as an alternative biotechnological source of crude drugs, highlighting its industrial advantages and two medicinal examples.
4. Explain Marine organisms as a vital emerging source of drugs, citing two distinct bioactive therapeutic agents derived from oceanic life.
5. Describe the natural biological source, chemical class, and pharmacological mechanism of action of Morphine isolated from Papaver somniferum.

6. Outline the chemical history, acetylation reaction, and dual therapeutic mechanisms of Aspirin derived from Willow bark (Salixalba).
★7. Describe the historical discovery, biological origin (Sweet Clover Disease), and anticoagulant mechanism of action of Warfarin.
8. Compare the core chemical nuclei, biological sources, and bacterial cell-wall targets of Penicillin (6-APA) and Cephalosporin (7-ACA).
9. Explain the chemical nature, mechanism of action, and clinical importance of Quinine and Artemisinin in the treatment of malaria.
★10. Differentiate between Codified and Non-Codified traditional systems of medicine with appropriate examples.
11. Explain the Chemical Classification of crude drugs, listing four major chemical classes along with representative drug examples.
12. Discuss the Pharmacological (Therapeutic) Classification of crude drugs, citing its primary clinical advantage and major limitation.
★13. Describe the Chemotaxonomical Classification of crude drugs with two diagnostic chemical markers and their characteristic botanical families.

3. Long Answer Questions

★1. Define Pharmacognosy, trace its comprehensive historical development from ancient civilizations to the modern era of chemical isolation, and discuss its present status and multidisciplinary scope in healthcare.
★2. Classify crude drugs using the six major classification systems (Alphabetical, Morphological, Taxonomical, Chemical, Pharmacological, and Chemotaxonomical), detailing the underlying principles, merits, and limitations of each with suitable examples.
★3. Discuss the landmark historical milestones in natural drug discovery, providing detailed profiles of Morphine, Quinine, Aspirin, Warfarin, Penicillin, Cephalosporin, Taxol, and Artemisinin regarding natural source, discoverer, chemical nature, and clinical indication.

4. Provide a comprehensive account of the primary Sources of Drugs (Plant, Animal, Microbial, Marine, Mineral, and Plant Tissue Culture), highlighting representative specimens, active chemical constituents, and therapeutic applications.
5. Discuss the regulatory frameworks of Herbal and Traditional Pharmacopoeias, detailing the history, administrative authority, structure, and quality parameters of the Indian Pharmacopoeia (IP), Ayurvedic Pharmacopoeia of India (API), and British Herbal Pharmacopoeia (BHP).
6. Explain the regulatory distinction between Official versus Non-Official drugs and Codified versus Non-Codified medical systems, and provide an in-depth comparative evaluation between Organized and Unorganized crude drugs.

Unit – 2

1. Very Short Answers Questions

★1. What is the fundamental difference between Scarification and Stratification in breaking seed dormancy?
★2. Name the chemical alkaloid used to induce polyploidy in medicinal plants and identify its specific cellular mechanism of action.
3. Which plant hormone is primarily utilized to induce adventitious root initiation in vegetative stem cuttings?
4. What is the fundamental distinction between In-situ and Ex-situ conservation of medicinal plants?
★5. State the botanical source, family, and primary iridoid glycoside markers of the endangered Himalayan alpine herb Kutki.
6. At what ontogenic developmental stage should leaves and herbs generally be collected for maximum phytochemical potency?

★7. What is the primary objective of drying crude drugs immediately after collection?
8. Define the process of “Garbling” in the primary post-harvest processing of crude drugs.
9. Name the gaseous plant growth regulator used commercially to stimulate laticifer turgor and maximize latex flow in Papaver somniferum.
★10. Name the secoiridoid bitter glycoside isolated from Swertia chirata that exhibits an extraordinary bitterness value of 1 : 58,000,000.
11. Differentiate between Autopolyploidy and Allopolyploidy in medicinal plant breeding.
12. What are Phytosomes and how do they enhance the therapeutic bioavailability of herbal phytoconstituents?

2. Short Answer Questions

★1. Enumerate the major advantages of commercial cultivation of medicinal plants over wild forest harvesting.
2. Describe the vegetative propagation of medicinal plants using specialized underground and subaerial organs with examples.
★3. Outline the core pillars of Good Agricultural Practices (GAP) for medicinal plants according to WHO guidelines.
4. Explain how Altitude and Temperature influence plant growth and secondary metabolite accumulation in medicinal plants.
★5. Discuss the optimal harvesting rules and collection guidelines for different morphological plant parts (Leaves, Barks, Roots, Flowers, Fruits/Seeds).
6. Explain the primary methods of drying crude drugs (Natural sun/shade drying vs. Artificial tray/vacuum and Freeze drying) and their specific applications.

7. Describe the major environmental and biological factors responsible for the deterioration of crude drugs during warehouse storage.
8. Discuss the physiological roles and practical applications of Auxins and Gibberellins in the cultivation of medicinal plants.
★9. Explain the concept of Polyploidy breeding, detailing the mechanism of Colchicine action and its effect on secondary metabolite yields.
10. Outline the applications of Mutation Breeding in medicinal plants, citing physical and chemical mutagens with research examples.
11. Differentiate between In-situ and Ex-situ conservation strategies for endangered medicinal plants with specific facility examples.
★12. Discuss the modern industrial strategies for Value Addition of medicinal plant raw materials.
13. Outline the botanical source, key chemical markers, therapeutic uses, and eco-conservation strategies for the endangered herb Chirata (Swertia chirata).

3. Long Answer Questions

★1. Describe the methods of plant propagation (Sexual, Asexual/Vegetative, and Micropropagation), and explain the comprehensive WHO guidelines on Good Agricultural and Collection Practices (WHO-GACP) for medicinal plants.
★2. Discuss the various environmental, edaphic, and agricultural factors influencing the cultivation of medicinal plants (Altitude, Temperature, Light, Rainfall, and Soil fertility), providing drug-specific examples for each.
★3. Explain the primary processing, garbling, drying methods, and packaging/storage conditions of crude drugs, and detail the physicochemical and biological factors responsible for drug deterioration during storage.

4. Classify plant growth regulators (Phytohormones), detailing the chemical types, physiological mechanisms, and pharmacognostic applications of Auxins, Gibberellins, Cytokinins, Abscisic Acid, and Ethylene in medicinal plant cultivation.
5. Discuss the genetic upgradation methods of medicinal plants, explaining the principles, mechanisms, and applications of Polyploidy, Mutation breeding, and Hybridization in enhancing secondary metabolite yield.
6. Define Eco-pharmacognosy and discuss its role in the sustainable conservation of endangered medicinal plants, providing comprehensive case studies of Kutki (Picrorhiza kurroa) and Chirata (Swertia chirata) detailing their botany, phytochemistry, threats, and conservation strategies.

Unit – 3

1. Very Short Answers Questions

★Q1. Define adulteration of crude drugs of natural origin.
Q2. What is meant by exhausted or spent organic materials (marc)?
★Q3. State the mathematical formula used to calculate the Stomatal Index (S.I.).
Q4. Mention the characteristic stomatal type found in Senna leaflets.
Q5. Name the unique non-glandular trichome diagnostic for Nux-vomica seeds.
Q6. What does Acid-Insoluble Ash specifically quantify in crude drug quality control?
★Q7. Define Loss on Drying (LOD) and mention its standard operating temperature condition.

Q8. Which apparatus is specifically employed for moisture estimation in volatile oil-bearing drugs?
Q9. Define the Bitterness Value of a crude drug and state its official reference benchmark.
★Q10. Write the mathematical formula used to calculate the Foaming Index.
Q11. State the minimum pharmacopoeial Swelling Index limit specified for Ispaghula husk.
Q12. What does the Acid Value of a fat or fixed oil indicate?
Q13. Name two plant-specific chloroplast genomic loci utilized in DNA barcoding.
Q14. Why is DNA barcoding ineffective for standardizing pure distilled volatile oils?

2. Short Answer Questions

★Q1. Explain the primary motives and causes for adulteration of natural crude drugs.
★Q2. Differentiate between Substandard Commercial Varieties and Superficially Similar Inferior Plants with standard pharmacopoeial examples.
Q3. How are exhausted drugs and vegetative tissue overload detected in crude drug lots? Give diagnostic examples.
Q4. Describe the organoleptic evaluation of crude drugs with respect to taste and structural fracture.
★Q5. Explain the qualitative microscopic classification of stomata with diagnostic botanical examples.

Q6. Describe the diagnostic importance of Calcium Oxalate crystal morphology in powdered drug identification.
★Q7. Explain the principles and formulas of Stomatal Index, Palisade Ratio, and Vein-Islet Number.
Q8. Describe the principle, formula, and diagnostic applications of Wallis’s Lycopodium Spore Assay.
Q9. Explain the determination and significance of Water-Soluble and Alcohol-Soluble Extractive values.
Q10. Differentiate between Total Ash, Acid-Insoluble Ash, and Water-Soluble Ash under WHO guidelines.
Q11. Discuss the determination and clinical significance of Swelling Index and Haemolytic Potential.
Q12. Outline the core molecular principle, target loci, and major industrial applications of DNA barcoding.

3. Long Answer Questions

★Q1. Define adulteration. Explain in detail the motives, causes, and the 7 systematic modes of adulteration with explicit pharmacopoeial crude drug examples.
★Q2. Discuss in detail the microscopic evaluation of crude drugs. Explain the qualitative histological markers and quantitative leaf constants including Wallis’s Lycopodium spore technique with standard mathematical expressions and reference values.
★Q3. Elaborate on the WHO guidelines for physicochemical standardization of crude drugs with specific focus on Analytical Ash Matrices, Solvent Extractive Values, and Moisture Estimation methods.
Q4. Explain the principles, standard analytical procedures, mathematical expressions, and pharmacognostic importance of Bitterness Value, Foaming Index, Swelling Index, Acid Value, and Saponification Value.
Q5. What is DNA Barcoding? Describe the step-by-step molecular diagnostic pipeline, core plant genomic loci (chloroplast and nuclear), key industrial quality applications in herbal drug standardization, and major analytical limitations.

Unit – 4

1. Very Short Answers Questions

Q1. Define primary plant metabolites and mention two representative examples.
★ Q2. Define secondary plant metabolites and outline their ecological significance in plants.
Q3. What is the diagnostic color observation indicating a positive result in Molisch’s general carbohydrate test?
Q4. State the reagent used and the visual observation for confirming peptide bonds in the Biuret test.
★ Q5. What is Saponification Value and how does it correlate with the molecular weight of fatty acids?
Q6. Differentiate between True alkaloids and Protoalkaloids based on their chemical structure.

★ Q7. Name the four classic general chemical reagents utilized for the precipitation and identification of alkaloids.
Q8. Which specific diagnostic chemical test is used to detect 2-deoxysugars in cardiac glycosides?
★ Q9. Describe the procedure and observation of the Shinoda test for flavonoids.
Q10. How do Hydrolysable and Condensed tannins differ in their reaction with 5% Ferric Chloride solution?
Q11. Define the fundamental Isoprene Rule governing terpenoid biosynthesis.
Q12. What is an Oleo-gum-resin? Give one official pharmacognostic example.
★ Q13. State the cardinal principle of Homeopathy encapsulated by the Law of Similia.
Q14. Name the plant source and clinical allopathic application of Artemisinin.

2. Short Answer Questions

★ Q1. Differentiate between Primary and Secondary plant metabolites across key pharmacognostic parameters.
Q2. Classify carbohydrates with examples and outline the principles of Fehling’s and Barfoed’s tests.
Q3. Classify lipids into fixed oils, fats, and waxes with examples, and state the significance of Acid Value.
★ Q4. Classify alkaloids into True, Proto, and Pseudo alkaloids with biosynthetic origins and drug examples.
Q5. Detail the four classic alkaloidal precipitation tests and explain the high-yield “M-D-W-H” memory aid.
★ Q6. Classify glycosides based on aglycone structure and describe Borntrager’s and Modified Borntrager’s tests.

Q7. Define flavonoids, present their fundamental C6-C3-C6 backbone, and discuss their therapeutic actions.
Q8. Compare Hydrolysable and Condensed tannins in terms of chemistry, dry distillation, and chemical tests.
Q9. Classify terpenoids based on isoprene units with representative medicinal examples and therapeutic uses.
Q10. Classify natural resins and resin combinations with suitable official crude drug examples.
★ Q11. Explain the core philosophies of Ayurveda: Panchamahabhuta, Tridosha, and Sapta Dhatu theories.
Q12. Outline the fundamental principles of Unani medicine: Umoor-e-Tabiyya and the Four Humors (Akhlat).
Q13. Explain the cardinal principles and theories of Homeopathy as propounded by Dr. Samuel Hahnemann.
★ Q14. Differentiate between Arishta and Asava, and describe Bhasma and Avaleha dosage forms in AYUSH.

3. Long Answer Questions

★ Q1. Define plant metabolites. Compare Primary and Secondary metabolites in detail, outline major intermediate biosynthetic pathways,and provide a systematic overview of the secondary metabolite classes with examples.
★ Q2. Write an exhaustive note on Alkaloids: definition, general properties, solubility behavior, structural classification (True, Proto, Pseudo), general reagents (M-D-W-H), and specific chemical diagnostic tests.
★ Q3. Discuss Glycosides in detail: definition, general chemical architecture (glycone vs aglycone), classification based on aglycone structure, pharmacological importance, and diagnostic tests including Borntrager’s, Modified Borntrager’s, and Keller-Kiliani tests.

Q4. Elaborate on the traditional Indian systems of medicine: Ayurveda and Siddha. Detail their philosophical foundations, diagnostic methodologies (Ashtavidha Pariksha & Envagai Thervu), and therapeutic treatment modalities.
★ Q5. Explain the fundamental principles, theory of humors, and therapeutic approaches in Unani medicine, and compare them with the Yin-Yang and Five Elements (Wu Xing) theories of Traditional Chinese Medicine (TCM).
Q6. Discuss the vital role of Pharmacognosy in modern allopathic drug discovery through natural lead molecules and semisynthetic drugs, and its role in the standardization and safety evaluation of AYUSH formulations.

Unit – 5

1. Very Short Answers Questions

★ Q1. State the biological source and major steroidal lactone present in Ashwagandha.
Q2. Name the primary volatile phenolic marker present in Tulsi leaves and state its chemical class.
★ Q3. By which ribosomal enzyme activation does Silymarin stimulate hepatocyte regeneration?
Q4. State the enzymatic cascade responsible for the pungent odor and active allicin generation in crushed Garlic.
★ Q5. How does Gymnemic acid abolish the gustatory sensation of sweetness?

Q6. Name the unique amino acid derivative in Fenugreek seeds that stimulates glucose-dependent insulin secretion.
★ Q7. Which specific inflammatory enzyme is selectively inhibited by AKBA from Boswellia serrata?
Q8. Name the principal dammarane triterpenoid saponins responsible for the cognitive-enhancing action of Brahmi.
Q9. State the diagnostic polysaccharide of Psyllium husk and its mechanical laxative mechanism.
★ Q10. Which natural quinazoline alkaloid from Vasaka served as the direct template for Bromhexine and Ambroxol?

2. Short Answer Questions

★ Q1. Explain the biological source, chemical constituents, and adaptogenic mechanism of Ashwagandha.
Q2. Describe the chemical markers and reported therapeutic actions of Tulsi and Amla as immunomodulators.
★ Q3. Discuss the dual hepatoprotective mechanism of Milk Thistle (Silibinin) and Kutki (Picroside).
★ Q4. Explain the cardiovascular therapeutic actions and biochemical mechanisms of Garlic and Arjuna.
Q5. Describe the antidiabetic mechanisms of Gymnema sylvestre and Fenugreek seeds.
Q6. Discuss the molecular anti-inflammatory mechanism of Curcumin from Turmeric and AKBA from Boswellia.

Q7. Explain the nootropic mechanism, synaptic actions, and chemical constituents of Brahmi.
Q8. Describe the biological sources, active principles, and antimicrobial roles of Giloy, Neem, and Andrographis.
★ Q9. Detail the pharmacognostic profile, composition, and laxative mechanism of Psyllium (Isabgol).
Q10. Differentiate between Aloe gel and Aloe latex with respect to source, chemical constituents, and uses.
★ Q11. Explain the therapeutic role of Chasteberry and Shatavari in female reproductive health.
Q12. Describe the respiratory actions of Vasaka and outline its role as a lead template in drug discovery.

3. Long Answer Questions

★ Q1. Discuss in detail Adaptogenic and Immunomodulating phyto-therapeutics: Ashwagandha, Tulsi, and Amla covering biological sources, families, chemical constituents, and molecular mechanisms of action.
★ Q2. Elaborate on Hepatoprotective and Cardiovascular phyto-therapeutic agents: Explain Milk Thistle, Kutki, Garlic, and Arjuna with their biological sources, active chemical markers, and pharmacological mechanisms.
★ Q3. Provide a comprehensive study of Metabolic Regulators: Explain Antidiabetic drugs (Gymnema, Fenugreek) and Anti-inflammatory agents (Turmeric, Boswellia) with their active principles and molecular mechanisms.
Q4. Write an exhaustive note on specialized phyto-therapeutics covering CNS Nootropics (Brahmi), Gastrointestinal agents (Psyllium), Women’s health (Shatavari & Chasteberry), and Respiratory agents (Vasaka).

📌 Questions marked with (★) represent high-frequency university exam as well as internal exam questions derived from PCI semester evaluation trends. Students must prioritize these questions for core concept clarity and good scoring in exam.