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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
B.Pharm SEMESTER-V • EXAMINATION SUMMER 2017
Subject code: 250006 Date: 16/06/2017
Subject Name: Pharmacognosy-IV
Time: 10:30 AM to 01:30 PM Total Marks: 80
Instructions:
1. Attempt any five questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Illustrate the biogenetic pathway of the biogenesis of unsaturated fatty acids in plants and animals.
06

Write the biogenesis of any alkaloid synthesized from ornithine.
05

Write a brief note on tracer techniques used for biogenetic studies in plants.
05
Q.2

Write a detailed note on drugs containing steroidal alkaloid.
06

Enlist the physical and chemical properties of alkaloids.
05

Differentiate between any two varieties of ephedra species.
05
Q.3

Write a note on stepwise preparation of black tea.
06

Write a note on morphine free species.
05

Write a note on Indian ginseng.
05
Q.4

Give the biological source, chemical constituents, chemical tests and uses of a seed containing indole alkaloids.
06

Write a note on adulterants of the drug mentioned in Q.4
05

Give examples of therapeutically active natural products which show trans- and cis-trans isomerism.
05
Q.5

Differentiate between rauwolfia and its most common adulterant.
06

Write a note on cultivation and collection of aconite.
05

Draw schematic T.S. and powder microscopy of vasaka.
05
Q. 6

Write chemical test for identification of:
i. Ergotamine
ii. Caffeine
iii. Quinine
06

Classify tropane alkaloids. Write a pharmacognostic note on any one tropane alkaloid containing drug.
05

Write atleast six species of cinchona. Draw a detailed T.S. of the bark.
05
Q. 7

Differentiate between two varieties of ipecacuanha.
06

Explain meso forms giving suitable examples of natural products
05

Write a note on production of ergot alkaloids by saprophytic culture.
05