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Which kingdom includes eukaryotic organisms that are heterotrophic and mostly multicellular except for yeast?

  1. Animalia

  2. Archaebacteria

  3. Bacteria

  4. Fungi

The correct answer is: Animalia

The kingdom that includes eukaryotic organisms that are heterotrophic and mostly multicellular, with the exception of yeast, is Fungi. This kingdom is characterized by organisms that absorb nutrients from their environment, breaking down organic matter. While many fungi are multicellular, like mushrooms and molds, yeast represents a unicellular form within this kingdom. In contrast, the Animalia kingdom consists of multicellular organisms that are also heterotrophic but have different developmental pathways and structures, including specialized cells and tissues. The other options, Archaebacteria and Bacteria, refer to prokaryotic organisms that do not fit the criteria of being eukaryotic or heterotrophic in the same manner as fungi.