Which statement is true regarding Duckweed?

Duckweed is a fascinating group of aquatic plants that consists of several species, including Common Duckweed and Giant Duckweed. The presence of both these species within the Duckweed family highlights the diversity of the group. Common Duckweed, scientifically known as Lemna minor, is small and often forms dense mats on the surface of quiet waters. Conversely, Giant Duckweed, or Spirodela polyrhiza, is larger and can also proliferate quickly in suitable environments. Recognizing both of these species is essential for managing aquatic ecosystems effectively, as they can have significant ecological impacts.

Regarding the other statements, saying that Duckweed can be classified into multiple non-native species does not fully capture the significance of the species mentioned, nor does it incorporate the potential benefits or challenges posed by the native species. Duckweed's growth in turbulent waters is inaccurate as it typically thrives in calm, still water bodies. While it is often considered a nuisance plant due to its rapid growth and potential to cover water surfaces, the selection of the option that emphasizes the existence of Common and Giant Duckweed provides a more comprehensive understanding of Duckweed's ecological role.