8 Questions
Which of the following is the botanical origin of Senna fruit?
Cassia acutifolia
Which active constituent is primarily located in the pericarp of Senna fruit?
Anthraquinone glycosides
What is the taste of Senna fruit?
Mucilagenous taste
Which layer of the bark is responsible for giving phloem to the outside and xylem (wood) to the inside?
Cork cambium (phellogen)
What is the main function of cork (phellem) in the structure of a typical bark?
To provide protection to the underlying tissues
What is the primary function of pericycle in the structure of a typical bark?
To store nutrients and water
Which element is recognized as the main constituent in powdered cinchona?
Quinine
What chemical test can be suggested for cinchona?
Mayer's reagent test
Study Notes
Senna Fruit
- The botanical origin of Senna fruit is Cassia acutifolia or Cassia angustifolia.
- The active constituent anthraquinone glycosides is primarily located in the pericarp of Senna fruit.
- Senna fruit has a bitter taste.
Bark Structure
- The phloem layer is responsible for giving phloem to the outside and xylem (wood) to the inside.
- The main function of cork (phellem) is to provide protection and prevent water loss.
- The primary function of pericycle is to produce cork cells.
Cinchona
- The main constituent in powdered cinchona is alkaloids, specifically quinine.
- A ** Dragendorff's reagent test** can be suggested for cinchona.
Test your knowledge of identifying Senna fruit based on its botanical origin, macroscopical characters, and other key characteristics.
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