Question: A student is shown a slide of cells from a species of producer in a food web. The student observes that the cells have chloroplasts. What conclusion about the food web is best supported by these findings?

  Options: 
 A. The producers capture energy from sunlight.
 B. The food web is found in a terrestrial ecosystem.
 C. The producers in the web are single-celled organisms.
 D. The food web contains many herbivores and omnivores. 
Answer: A