Which of the following is not correctly matched?

Question

Accepted Answer

Option 4 is correctly identified as the answer because Sporozoans are not classified under Fungi. Instead, Sporozoans are a group of protozoans, which are part of the kingdom Protista. They are characterized by their spore-forming stage and are typically parasitic. This classification is distinct from fungi, which are a separate kingdom characterized by their chitinous cell walls and heterotrophic mode of nutrition.

Now, let's examine why the other options are correctly matched:

1. **Methanogens: Archaebacteria** - Methanogens are indeed a type of archaebacteria. They are microorganisms that produce methane as a metabolic byproduct in anoxic conditions. Archaebacteria are a distinct group of prokaryotes that differ from eubacteria in their genetic makeup and membrane structure.

2. **Nostoc: Eubacteria** - Nostoc is correctly classified under eubacteria. It is a genus of cyanobacteria, which are photosynthetic bacteria found in various environments. Eubacteria, or "true bacteria," encompass a wide range of bacteria, including cyanobacteria like Nostoc.

3. **Euglenoids: Protista** - Euglenoids are correctly placed in the kingdom Protista. They are a group of single-celled organisms that have characteristics of both plants and animals. Euglenoids, such as Euglena, are known for their ability to photosynthesize like plants and move like animals, making them a classic example of protists.

In summary, Option 4 is the correct answer because Sporozoans belong to the kingdom Protista, not Fungi. The other options are correctly matched with their respective classifications.