Which of the following flowers requires buzz pollination?

Buzz pollination is a specialized process that certain plants require to effectively release their pollen. This phenomenon occurs when a bee vibrates its flight muscles while gripping the flower, causing the pollen to be dislodged and released in a more accessible manner. Blueberries are among the plants that benefit significantly from this method, as their flowers are structured in a way that makes the pollen difficult to access without the vibration technique.

Flowers like sunflowers, roses, and daisies do not necessitate buzz pollination because their pollen can be accessed more readily by visiting bees simply by landing on the flowers. In contrast, the unique anatomy of blueberry flowers, which tends to be more tubular, is specifically adapted to facilitate the buzz pollination process. Therefore, this adaptation highlights the reliance of blueberries on certain bee behaviors to ensure effective pollination and subsequent fruit production.