You are given a newly discovered organism and are asked to help classify it.You note only one opening to the digestive tract,and microscopic examination shows it to be multicellular and lacking chloroplasts.You therefore call it

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Quizplus · Accepted Answer

The organism is heterotrophic because it lacks chloroplasts, indicating it cannot photosynthesize and must obtain food from other sources. It has an incomplete digestive tract because there is only one opening for both ingestion and egestion, typical of a simple, sac-like digestive system.

You Are Given a Newly Discovered Organism and Are Asked