Final answer:
Wind-pollinated trees often have flowers with feathery stigmas and produce a large amount of sticky pollen, which is easily carried by the wind for pollination.
Step-by-step explanation:
Trees that are wind pollinated often feature flowers with exposed, feathery stigmas and typically produce large amounts of pollen.
Unlike flowers that rely on animal pollinators, wind-pollinated species do not commonly have large colorful flowers, sweet nectar, or attractive fragrance, as these traits serve to attract animals rather than facilitate wind pollination. Therefore, the statement that best fits the feature of wind-pollinated trees is that they have sticky pollen, which is suited to being carried by the wind to other plants for effective dissemination.