Question

Find out the incorrect sentence

• A. Protista includes unicellular eukaryotic organisms.
• B. Whittaker considered cell structure, mode, and source of nutrition for classifying the organisms in five kingdoms.
• C. Both Monera and Protista may be autotrophic and heterotrophic.
• D. Monerans have a well-defined nucleus.

Answer 1

The correct option is D

Monerans have a well-defined nucleus.

The correct option is D:

Explanation for the correct option:

1. Monera consists of unicellular prokaryotic bacteria.
2. It is devoid of any membrane-bound cellular organelles.
3. It has no well-defined nucleus and the DNA is naked.

Explanation for the incorrect options:

Option A:

1. Protista consists of unicellular eukaryotic organisms.
2. They can be found free-living in terrestrial and marine habitats.

Option B:

1. Whittaker proposed a five-kingdom classification based on the cell structure, reproduction, mode of nutrition, and thallus organization.
2. The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia.

Option C:

1. Monerans are unicellular prokaryotic organisms while protists are unicellular eukaryotic organisms.
2. They both are either autotrophic or heterotrophic.

Final answer: Option (D) Monerans having a well-defined nucleus is the correct answer.