Concept:The essential parts of a flower are the reproductive organs, which include the male stamen and the female pistil components.
Explanation:The stamen is made up of the anther and filament, while the pistil consists of the stigma, style, and ovary.
In the given figure, the accessory parts, such as petals and sepals, are represented by labels I and II, and these are not essential for reproduction.
The labels that indicate the reproductive organs are III (anther), V (stigma), and VI (ovary).
Therefore, the set containing all the essential floral parts is III, V, and VI.
Answer:C. III, V and VI
