......... protozoan caused malaria possess true walls in slime moulds

Options

A. Plasmodium
B. Virus
C. Bacteria
D. Fungus

Answer

To answer the question regarding the protozoan that causes malaria and the presence of true walls in slime molds, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Identify the Protozoan Causing Malaria**:
- The protozoan responsible for causing malaria is **Plasmodium**. There are several species of Plasmodium, with Plasmodium falciparum being the most common and deadly.

2. **Understanding Slime Molds**:
- Slime molds are a group of protists that can exist in two forms: as single-celled organisms and as multicellular organisms during certain life stages. They are not classified as fungi, even though they share some similarities.

3. **True Walls in Slime Molds**:
- Some slime molds, particularly the cellular slime molds, have structures that can be referred to as "true walls." These walls are not the same as the cell walls found in plants or fungi but are part of the organism's cellular structure.

4. **Connecting the Concepts**:
- The question asks about the relationship between the protozoan causing malaria and the characteristics of slime molds. Plasmodium does not have true walls, as it is a protozoan, while slime molds can exhibit true walls in certain stages.

5. **Conclusion**:
- The protozoan that causes malaria is **Plasmodium**, and while slime molds can have true walls, they are distinct from the characteristics of Plasmodium.

### Final Answer:
- The protozoan that causes malaria is **Plasmodium**, and slime molds can have true walls in certain forms.