What are alternative names for medicinal plants, and which of the listed plants is not medicinal?

Here are the solutions to the questions:

3. Which of the following is another name by which medicinal plants are called? A. bush medicine Bush medicine is a term often used to refer to traditional remedies and practices that utilize plants for medicinal purposes, especially in indigenous or rural communities. Ecosystems, mangroves, and swamps describe environments or broader ecological concepts, not alternative names for medicinal plants.

4. Which of the following is NOT the name of a medicinal plant? D. Poison oak Cerasee, Fever grass (lemongrass), and Life leaf (Bryophyllum pinnatum) are all well-known plants used in traditional medicine for various ailments. Poison oak, however, is known for causing an irritating rash upon contact and is not considered a medicinal plant.

The final answer for 3 is $\boxed{\text{A}}$
The final answer for 4 is $\boxed{\text{D}}$