27 Questions
What is pharmacognosy defined as?
The study of medicinal drugs derived from plants or other natural sources
Which of the following disciplines is NOT involved in the complete understanding of medicinal plants?
Microbiology
What does the word 'pharmacognosy' mean?
Drug knowledge
Which of the following natural products may be included in pharmacognosy?
Marine organisms
What are the limitations of using single pure compounds in medicine?
They are not without limitations
In addition to plants, which of the following animal products is traditionally included in pharmacognosy?
Beeswax
Which science deals with the description, identification, nomenclature, and classification of organisms?
Taxonomy
According to the FDA, what is the definition of a drug?
Any synthetic or natural substance used for the cure, prevention, or mitigation of disease
What is the main purpose of a pharmacopoeia?
To contain an official list of medicinal drugs and articles on their preparation and use
Which term deals with the active constituents found in natural substances that can be isolated by various methods like extraction and distillation?
Extractives (derivatives)
What is the definition of a crude drug?
Any naturally occurring, unrefined substance derived from organic or inorganic sources intended for use in the diagnosis, cure, mitigation, or prevention of disease
Which process do natural drugs (crude) undergo?
Collection and drying
What is the example provided for a natural drug obtained from a plant?
Tragacanth
'Synthetic drug' is obtained by:
'Chemical reaction'
'Official drugs' are listed or recognized in:
(U.S.P. and N.F.)
'Pharmacognosy' science is concerned with studying the following subjects EXCEPT:
(Definitions & Basic Principles Taxonomy)
Which of the following is an example of a secondary metabolite that is of established pharmaceutical interest?
Flavonoids
In the context of chemotaxonomic analyses, which of the following has been demonstrated to have value for the delineation of closely related plant species and chemotypes?
Immunological tests
What has recent research illustrated as a correspondence for the delineation of closely related plant species and chemotypes?
Genetic profiles and alkaloids
What does the binomial system of plant nomenclature involve?
Using a combination of uppercase and lowercase letters to represent genus and species
In which situation can the species of a plant be written in capital letters?
When the species is named after a botanist or biologist
Which type of system is often preferable for some practical purposes, despite its susceptibility to change?
Stable, workable phonetic system
What characteristic does the botanical name 'Conium maculatum' indicate about the plant?
It has a spotted stem
In phylogenetic classifications, what kind of characters are employed to indicate the relationship of one taxon to another?
Characters capable of showing relationships
What does the botanical name 'Atropa belladonna' imply about the plant?
It has a lady-like appearance
What consideration does the taxonomist have to make when deciding whether each character should be given equal value or a weighting system should be employed?
Whether to give equal value to each character or employ a weighting system
Which type of characters are potentially available for building up a classification of the plant kingdom?
Chemical and genetic characters
Test your knowledge about the introduction to pharmacognosy, the study of medicinal drugs derived from plants or other natural sources. Explore the physical, chemical, biochemical, and biological properties of drugs, as well as the search for new drugs from natural sources.
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