Question

below is a food web from little rock lake, a freshwater lake ecosystem in wisconsin. which one of the following organisms eats a secondary consumer in this food web? green algae rotifer whirligig beetle water cricket

Explanation:

1. First, identify trophic levels:

• Producers: green algae, golden algae, water mold (base of food web, eaten by primary consumers)
• Primary consumers: rotifer, copepod, water flea (eat producers)
• Secondary consumers: backswimmer, whirligig beetle, water cricket (eat primary consumers)
• Tertiary consumers: shiner, black crappie (eat secondary consumers)

1. Match the options to the question (organism that eats a secondary consumer):

• Green algae: producer, eats no other organisms
• Rotifer: primary consumer, eats producers
• Whirligig beetle: secondary consumer, eats primary consumers
• Water cricket: secondary consumer, eats primary consumers; additionally, the food web shows black crappie (a tertiary consumer) preys on water cricket, meaning water cricket is a secondary consumer that is eaten by a higher trophic level.

Answer:

water cricket