Which feature is characteristic of Bladderwort (Utricularia spp) flowers?

Bladderwort (Utricularia spp.) flowers are indeed distinctive for having two liplike petals that extend above the water's surface. This adaptation serves several purposes, including aiding in pollination, as the flowers are usually pollinated by insects that are attracted to these prominent petals. The structure of the flowers is designed to be visible and accessible above water, allowing for effective reproduction in aquatic environments.

The presence of these liplike petals also helps differentiate these species from others, underlining the unique adaptations that plants have developed to thrive in their specific habitats. The design of the flowers not only makes them visually striking but also functional, as it enables the plant to successfully achieve pollination despite being primarily aquatic.