Question

Using the food web, describe two complete food chains that include a producer, consumer, and decomposer.
A food web showing many food chains. Producers are tree and grass. Primary consumers are caterpillar, deer, bird, chipmunk, rabbit, grasshopper, spider. Secondary consumers are bird, spider, owl, mouse, fox, hawk. Decomposer is mushroom.

Answer 1

Here are two complete food chains from the web (producer → consumer(s) → decomposer):

1) Tree → Caterpillar → Bird → Mushroom
- Caterpillar eats tree leaves (primary consumer). The bird eats the caterpillar (secondary consumer). When the bird (or its wastes) dies, the mushroom (decomposer) breaks down the organic matter and returns nutrients to the soil.

2) Grass → Rabbit → Fox → Mushroom
- Rabbit eats grass (primary consumer). Fox eats the rabbit (secondary/tertiary consumer). Mushroom decomposes the fox’s remains, recycling nutrients back to the producers.

Note: some organisms in the web (e.g., birds, spiders) can act at more than one trophic level depending on what they eat.