Step 1: Concept:
This question assesses knowledge of medicinal plants, focusing on the primary plant part used for therapeutic purposes.
Step 2: Explanation:
Match each plant in List-I with its corresponding medicinal part in List-II.
A. {Withania somnifera (Ashwagandha):} The Root is the most medicinally valuable part of this adaptogenic herb. Thus, A matches with III.
B. {Aloe barbadensis (Aloe vera):} The fleshy Leaves contain gel and latex, widely used for skin ailments and as a laxative. Thus, B matches with IV.
C. {Aegle marmelos (Bael):} The Fruit, both ripe and unripe, is used extensively in traditional medicine for digestive issues. Thus, C matches with I.
D. {Datura metel:} This toxic plant contains potent tropane alkaloids. Various parts (leaves, flowers, seeds) are used traditionally, often externally. Given the options and other matches, All parts of plants is the most fitting description, as active compounds are distributed throughout. Thus, D matches with II.
Step 3: Answer:
The correct matches are:
A \(\rightarrow\) III
B \(\rightarrow\) IV
C \(\rightarrow\) I
D \(\rightarrow\) II
This corresponds to option (D) A-III, B - IV, C - I, D - II.