Which kingdom includes eukaryotic organisms that mostly decompose organic wastes and absorb nutrients into their cells?

Which kingdom includes eukaryotic organisms that mostly decompose organic wastes and absorb nutrients into their cells?

• A. Fungi
• B. Animalia
• C. Plantae
• D. Protista

Answer: (A)

Understanding how eukaryotic kingdoms obtain nutrients shows that fungi uniquely digest food outside their cells and then absorb the nutrients. Fungi secrete enzymes into their surroundings, breaking down complex organic material into smaller molecules that they take up through their cell membranes. This absorptive nutrition, aided by hyphae that increase surface area, makes them major decomposers of organic waste. They are eukaryotes with cell walls made of chitin, a hallmark feature of the group. In contrast, animals primarily ingest and digest food internally, plants rely on photosynthesis for their own carbon, and protists are a diverse group with varied feeding strategies. The described mode of extracellular digestion followed by absorption best matches fungi.

Understanding how eukaryotic kingdoms obtain nutrients shows that fungi uniquely digest food outside their cells and then absorb the nutrients. Fungi secrete enzymes into their surroundings, breaking down complex organic material into smaller molecules that they take up through their cell membranes. This absorptive nutrition, aided by hyphae that increase surface area, makes them major decomposers of organic waste. They are eukaryotes with cell walls made of chitin, a hallmark feature of the group. In contrast, animals primarily ingest and digest food internally, plants rely on photosynthesis for their own carbon, and protists are a diverse group with varied feeding strategies. The described mode of extracellular digestion followed by absorption best matches fungi.