Which of the following is not a member of Kingdom Monera ?

Question

Accepted Answer

Option 3, "Slime moulds," is the correct answer because slime moulds are not members of the Kingdom Monera. Instead, they belong to the Kingdom Protista. Slime moulds are eukaryotic organisms, meaning they have cells with a true nucleus and other membrane-bound organelles. This characteristic distinguishes them from members of the Kingdom Monera, which are prokaryotic and lack a true nucleus.

Now, let's explain why each of the other options is incorrect:

1. **Blue green algae**: Also known as cyanobacteria, blue green algae are indeed members of the Kingdom Monera. They are prokaryotic organisms, meaning they do not have a true nucleus. Cyanobacteria are known for their ability to perform photosynthesis and are often found in aquatic environments.

2. **Mycoplasma**: Mycoplasma are also part of the Kingdom Monera. They are a group of bacteria that lack a cell wall, which is unusual among prokaryotes. Despite this unique feature, they are still classified as prokaryotic organisms and belong to the Monera kingdom.

3. **Methanogens**: Methanogens are a type of archaea, which are also classified under the Kingdom Monera. These microorganisms are prokaryotic and are known for producing methane as a metabolic byproduct in anaerobic conditions. They are commonly found in environments such as wetlands and the digestive tracts of ruminants.

In summary, Option 3, "Slime moulds," is the correct answer because slime moulds are eukaryotic and belong to the Kingdom Protista, not the Kingdom Monera. The other options are all prokaryotic and correctly classified under the Kingdom Monera.