What Organism is at the First Trophic Level in a Tallgrass

Question

What organism is at the first trophic level in a tallgrass prairie ecosystem?  
A) Birds
B) Grasshoppers
C) Grasses
D) Decomposers
E) Parasites

Accepted Answer

The first trophic level in a tallgrass prairie ecosystem is made up of primary producers, which are the grasses. They are the base of the food chain and provide energy to the herbivores and carnivores that inhabit the ecosystem. Birds, grasshoppers, and parasites are consumers at higher trophic levels, while decomposers break down dead organic matter and are not considered part of the trophic levels.