What is common to the following plants : Nepenthes, Psilotum , Rauwolfia and Aconitum ?

Options

A. All are ornamental plants
B. All are phylogenic link species
C. All are prone to over exploitation
D. All are exclusively present in the East- ern Himalayas

Answer

c

Explanation

Rauwolfia, Aconitum & Podophyllum are medici- nal plants which have been overexploited and are en- dangered now from their natural habitats. Botanical tours often lead to mass collection of rare plants from their small area of occurrence like Psilotum & Nepenthes.