Question

Kingdom monera belongs to _______.

• A. Free-living organisms
• B. Parasites
• C. Nitrogen-fixers
• D. All of these

Answer 1

The correct option is D All of these

• Some of the bacteria (e.g., Cyanobacteria) who can produce their own food, are free living.
• Some bacteria (e.g. Azotobacter) can convert atmospheric nitrogen into inorganic nitrogenous compounds and fix them into soil.
• Some bacteria (e.g. Salmonella) are parasitic in nature. They causes diseases in humans, birds, plants, animals etc.

So the correct answer is "All of these".