Question 4
In which part of the citronella plant is the essential oil found?
The right answer is the one marked above.
The leaves. Citronella, lemongrass and eucalyptus all carry their oil in the leaves.
Different plants store it in different parts — vetiver in the roots, sandalwood in the trunk, clove in the flower parts, nutmeg in the seeds. Cinnamon is unusual in holding it in bark, roots and leaves alike.