Concept:
Horticulture is divided into specialized branches based on the type of crops cultivated.
Step 1: Understanding horticultural branches.
Each branch focuses on a specific category of plants such as fruits, vegetables, flowers, or trees.
Step 2: Identifying flower cultivation.
The branch that deals specifically with the cultivation, management, and marketing of flowers is floriculture.
Step 3: Evaluating the options.
- Pomology $\rightarrow$ Study of fruits (incorrect)
- Olericulture $\rightarrow$ Study of vegetables (incorrect)
- Floriculture $\rightarrow$ Study of flowers (correct)
- Arboriculture $\rightarrow$ Study of trees (incorrect)
Step 4: Additional insight.
Floriculture includes growing flowering plants for gardens, decorative purposes, and commercial uses like cut flowers and bouquets.
Step 5: Conclusion.
Thus, the branch is called floriculture.