Which of the following aquatic plants can reproduce both sexually and asexually?

Cattail and sago pondweed are capable of reproducing both sexually and asexually, which makes them distinct among aquatic plants.

Sexual reproduction in these plants occurs through the production of seeds, which can be fertilized, leading to the growth of new plants from those seeds. This method allows for genetic diversity, which is beneficial for adapting to environmental changes.

Asexual reproduction, on the other hand, can occur through vegetative means, such as the production of rhizomes or tubers. Cattails can reproduce via rhizomes, which are horizontal underground stems that can sprout new shoots, allowing them to spread efficiently in their habitats. Sago pondweed can propagate by producing tubers, which also contribute to the establishment of new plants without the need for seeds.

This ability to reproduce in multiple ways gives cattail and sago pondweed a significant advantage in their aquatic environments, enabling them to thrive even in varying conditions. The other options listed either primarily reproduce sexually or are limited in their methods of asexual reproduction, which is why they do not possess the same versatility in reproduction as cattail and sago pondweed.