Which terms describe the basic categories used to describe the kingdoms by nutrition and cellular organization?

• A. Autotrophic & Heterotrophic, Unicellular & Multicellular
• B. Photosynthesis & Respiration
• C. Prokaryotic & Eukaryotic
• D. Kingdoms and Phyla

Answer: (A)

Think about how living things are categorized by how they obtain energy and by how their bodies are built. Autotrophic organisms make their own food using energy from light or chemicals, while heterotrophic organisms rely on other organisms for food. Unicellular organisms consist of a single cell, whereas multicellular organisms are made of many cells. These two pairings—nutrition (autotroph vs heterotroph) and cellular organization (unicellular vs multicellular)—are the basic ways scientists describe kingdoms.

The other options describe processes (photosynthesis vs respiration), cell types alone (prokaryotic vs eukaryotic), or taxonomic levels (kingdoms vs phyla), none of which capture both nutrition and cellular organization together.