5. Based on the food web shown, which of the following is true about the feeding relationships?
Answer: C
Phytoplankton are producers that convert light energy into organic matter.
Phytoplankton play a crucial role in the ecosystem as producers, utilizing sunlight to perform photosynthesis and convert light energy into organic matter. This process forms the foundation of the food web, supporting various organisms within the Chesapeake Bay ecosystem.
A) Bivalves have no natural predators in the Chesapeake Bay ecosystem.
This statement is incorrect because bivalves, such as clams and oysters, do have natural predators, including various species of fish and birds. The presence of these predators indicates that bivalves are an integral part of the food web and are subject to predation.
B) Wading birds are herbivores that eat aquatic vegetation.
This option is also incorrect. Wading birds are typically carnivorous, feeding on fish, amphibians, and invertebrates rather than being herbivores that consume aquatic vegetation. Their feeding habits reflect their role as predators in the ecosystem.
C) Phytoplankton are producers that convert light energy into organic matter.
This statement is accurate, as phytoplankton are essential producers in aquatic ecosystems. Through photosynthesis, they convert sunlight into chemical energy, forming the basis of the food web and supporting various consumers, from zooplankton to larger marine animals.
D) Sea ducks are primary consumers that eat only bald eagles.
This statement is incorrect. Sea ducks are primarily omnivorous and feed on a variety of food sources, including mollusks and aquatic plants, rather than being primary consumers that exclusively eat bald eagles. In fact, bald eagles are predators of sea ducks, not the other way around.
Conclusion
Phytoplankton are indeed the correct answer as they serve as producers in the food web, converting light energy into organic matter, which is vital for the ecosystem's health. All other options misrepresent the roles and relationships of the organisms mentioned, highlighting the importance of understanding accurate ecological interactions.