How does phosphorus influence aquatic plants specifically?

Phosphorus plays a crucial role in the growth and development of aquatic plants, particularly in stimulating growth among algae. This nutrient is often a limiting factor in aquatic ecosystems; when it is present in sufficient quantities, it can lead to a surge in algae populations. This phenomenon is commonly referred to as an algal bloom, which can occur when phosphorus from sources such as agricultural runoff, wastewater, and other pollution enters water bodies.

Algae utilize phosphorus for their cellular processes, which enhances their growth and reproduction rates. When phosphorus concentrations are elevated, it can lead to excessive growth of these organisms, ultimately impacting water quality and the overall health of the aquatic ecosystem. While some aquatic plants also benefit from phosphorus, it is particularly significant for algae, making option B the correct choice. Algal blooms can have various consequences, including depletion of oxygen levels in the water, affecting fish and other aquatic life, and altering the habitat for other organisms.