Final answer:
Bacteria and amoeba are unicellular, while humans and mushrooms are multicellular. Bacteria and Amoeba are unicellular, while Humans and Mushrooms are multicellular. This is based on their characteristic cellular structures.
Step-by-step explanation:
1) A and B are unicellular, C and D are multicellular
In this case, bacteria (A) and amoeba (B) are examples of unicellular organisms. Bacteria are single-celled microorganisms without a nucleus, while amoeba is a single-celled eukaryotic organism. On the other hand, humans (C) and mushrooms (D) are multicellular organisms. Humans have trillions of cells that make up our bodies, and mushrooms are made up of many interconnected cells.
Bacteria and Amoeba are unicellular, while Humans and Mushrooms are multicellular. This is based on their characteristic cellular structures.
The question regarding whether certain organisms are unicellular or multicellular can be answered by understanding the basic characteristics of these organisms. Bacteria and Amoeba are both examples of unicellular organisms, which means they consist of a single cell. On the other hand, Humans and Mushrooms are multicellular organisms, made up of many cells that can specialize in different functions. This classification is based on the organism's cellular structure described in textbooks and well-established biological knowledge. The correct option given these classifications is: 1) A and B are unicellular, C and D are multicellular.