Step 1: Understanding the Concept:
This question tests knowledge of botanical names of ornamental and field crops. Step 2: Detailed Explanation: Sunflower is botanically known as Helianthus annuus.
It belongs to the family Asteraceae (Compositae).
The genus name "Helianthus" comes from Greek words "helios" (sun) and "anthos" (flower).
Other botanical names:
- Gypsophila elegans (A): Baby's breath (ornamental flower).
- Helichrysum bracteatum (C): Strawflower (ornamental).
- Iberis umbellate (D): Candytuft (ornamental).
Sunflower is important as:
- Oilseed crop.
- Ornamental crop.
- Bird feed.
- Industrial uses.
Thus, Helianthus annuus is the botanical name of sunflower. Step 3: Final Answer:
Thus, sunflower is botanically known as Helianthus annuus, which corresponds to option (B). [0.5cm]