Taxus wallichiana Zucc (Himalayan yew) is a medicinal plant found in which of the following states?
- AOption (a)
Goa
- BOption (b)
Jharkhand
- COption (c)
Himachal Pradesh
- DOption (d)
Bihar
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Correct answer
Himachal Pradesh
Why this answer is correct
The correct answer is Himachal Pradesh
Key Points
The Himalayan Yew :
- The Himalayan Yew (Taxus wallachiana) is a medicinal plant found in various parts of Himachal Pradesh and Arunachal Pradesh.
- The plant holds an important place in traditional medicine and its products are used by the local populations for treating common infections.
- A chemical compound called ‘taxol’ is extracted from the bark, needles, twigs and roots of this tree, and it has been successfully used to treat some cancers – the drug is now the biggest selling anti-cancer drug in the world.
- The species is under great threat due to over-exploitation.
- In the last decade, thousands of yew trees have dried up in various parts of Himachal Pradesh and Arunachal Pradesh.
- Yew has undergone a recent, range-wide population decline of at least 50% as per IUCN.
- Due to the illegal cutting of plant parts and other anthropogenic pressures, Himalayan yew is endangered, and threatened with extinction, in Himalaya.
- Throughout its range in the western Himalayas, it is declining in response to a range of threats.
- In Afghanistan, up to 50% of the forests where it occurs have been destroyed or heavily logged (UNEP 2003) over the last 30 years.
- In northwest India and western Nepal, exploitation associated with Taxol production has led to a national decline of up to 90% in Taxus populations throughout the country.
- Also, in other countries such as Pakistan, overexploitation for fuel, fodder, and medicinal use has led to a significant decline.
- The decline is continuing and while the causes are largely understood, in many areas they will not be reversible. On this basis, an assessment of Endangered is warranted.