1. A Redwood Tree (Sequoiadendron giganteum) - This is a giant, long-lived tree found in California. It represents the plant kingdom.

2. A Golden Retriever (Canis lupus familiaris) - This domesticated dog is a mammal, exemplifying the animal kingdom.

3. E. coli bacteria (Escherichia coli) - This single-celled organism is a type of bacteria, representing the vast world of microorganisms.

4. A Mushroom (Agaricus bisporus) - This familiar fungus is an example of a kingdom that is neither plant nor animal.