JNTU
JNTU B.Pharmacy II PHARMACOGNOSY AND PHYTOCHEMISTRY-I Previous Question Paper (April/May - 2023 - R17)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
List the various sources of crude drugs with examples.
Answer
Crude drugs are derived from various sources: Plant source (e.g., Cinchona, Senna), Animal source (e.g., Honey, Beeswax), Mineral source (e.g., Bentonite, Kaolin), and Marine source (e.g., Agar, Alginates).
Explain physical evaluation of crude drugs with examples.
Answer
Physical evaluation involves determining physical constants to establish purity and quality. Examples include: Moisture content (determined by loss on drying, e.g., in Digitalis), Viscosity (e.g., in liquid paraffin or oils), Refractive index (e.g., in volatile oils), and Ash values (e.g., total ash, acid-insoluble ash to detect inorganic impurities).
Define the terms Polyploidy and Hybridization in medicinal plants.
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Define mutation and write its significance in plant tissue culture.
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Define the terms Elicitors and Precursors used in plant tissue culture.
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Briefly discuss the types of plant tissue culture techniques.
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Name any two Unani formulations with their uses.
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Classify resins with examples.
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Write the biological source of Castor oil and Agar.
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Uses of Chaulmoogra oil, Serratiopeptidase and Tragacanth.
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Part B
Define and classify crude drugs with examples.
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Explain morphological and pharmacological classification with their merits and demerits.
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Explain taxonomical and chemical classification with their merits and demerits.
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Describe lycopodium spore method.
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Describe the exogenous factors affecting cultivation of crude drugs.
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Explain the role of plant growth regulators with their merits and demerits.
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Explain the process of drying and garbling of crude drugs.
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Discuss the processing of crude drugs with their merits and demerits.
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Explain the growth curve in plants.
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Enlist the applications of plant tissue culture in pharmacognosy.
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Write a note on callus and suspension culture.
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What are edible vaccines, discuss their merits and demerits.
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Explain the principle of Ayurveda and give examples of formulations containing crude drugs.
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Define and classify alkaloids with examples.
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Define and classify glycosides with examples.
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Explain the principle of Chinese system of medicine and give examples of crude drugs used in the formulations.
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Define and classify marine drugs with examples and uses.
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Write the biological source, chemical nature and uses of Cotton and Hemp.
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Write the source, chemistry and commercial use of Acacia and Wool Fat.
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Write a note on natural allergens and streptokinase.
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