Aquatic Plants & Algae -

These are complex, multicellular organisms. Like land plants, they possess specialized tissues, including roots, stems, and leaves. Most aquatic plants evolved from terrestrial ancestors that returned to the water, retaining vascular systems to transport nutrients.

Through photosynthesis, they release dissolved oxygen into the water, which is essential for fish and invertebrates. Aquatic Plants & Algae

The most important distinction lies in their complexity and evolutionary history. These are complex, multicellular organisms