Question

below is a food web from little rock lake, a freshwater lake ecosystem in wisconsin. which one of the following organisms eats a primary consumer in this food web? black crappie whirligig beetle copepod green algae

Explanation:

1. First, identify primary consumers: these are herbivores that eat producers (algae, mold). In the food web, water flea, copepod, rotifer are primary consumers as they feed on golden algae, green algae, water mold.
2. Next, check which option eats these primary consumers:

• Black crappie eats water cricket and whirligig beetle (secondary consumers), not primary consumers.
• Whirligig beetle eats primary consumers (water flea, copepod, rotifer).
• Copepod is a primary consumer, it eats producers.
• Green algae is a producer, it does not eat other organisms.

Answer:

whirligig beetle