Which type of algae can be both filamentous and planktonic?

Algae are a diverse group of photosynthetic organisms that can thrive in various environments, demonstrating different growth forms. They can be classified as filamentous, which means they grow in long, thread-like structures, and planktonic, which indicates that they live suspended in water. The versatility in their form allows them to adapt to varying environmental conditions.

Filamentous algae, such as certain species of green algae, often develop long strands or filaments that can be found attached to surfaces or floating in the water. On the other hand, planktonic algae, such as diatoms or some cyanobacteria, exist in the water column as freely floating cells.

The answer highlights the unique adaptability of algae, as they can take on both forms depending on environmental factors such as light availability, nutrient levels, and water movement. These different growth forms allow algae to exploit various ecological niches, making them vital components of aquatic ecosystems.