In South American lakes visiting Flamingos and resident fishes compete for

Options

A. Phytoplankton
B. Zooplankton
C. Diatoms
D. Aquatic plants

Answer

To solve the question regarding the competition between visiting flamingos and resident fishes in South American lakes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks what resource is being competed for by visiting flamingos and resident fishes in South American lakes.

2. **Identify the Types of Resources**: The options provided are:
- A) Phytoplankton
- B) Zooplankton
- C) Diatom
- D) Aquatic plant

3. **Define Competition**: Competition occurs when two or more species compete for the same resource, which can lead to a decrease in the availability of that resource for both species involved.

4. **Analyze the Feeding Habits**:
- Flamingos are known to feed on small aquatic organisms, primarily zooplankton, which includes tiny crustaceans and other small animals.
- Resident fishes in the same lakes also feed on similar food sources, including zooplankton.

5. **Determine the Common Resource**: Since both flamingos and resident fishes are competing for food, we need to identify which of the options is a common food source for both.

6. **Evaluate the Options**:
- **Phytoplankton**: Generally consumed by filter feeders and not primarily by flamingos.
- **Zooplankton**: A primary food source for both flamingos and many fish species.
- **Diatom**: A type of algae, not primarily consumed by flamingos.
- **Aquatic plant**: While some fish may eat aquatic plants, flamingos do not primarily feed on them.

7. **Conclusion**: Given the feeding habits and the competition for food resources, the correct answer is **B) Zooplankton**.

### Final Answer:
In South American lakes, visiting flamingos and resident fishes compete for **B) Zooplankton**.

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