Question

Well defined nucleus is absent in :

• A. blue green algae
• B. diatoms
• C. algae
• D. yeast

Answer 1

The correct option is A

blue green algae

The correct option is A:

1. Blue green algae are also called cyanobacteria. these organism are kept under kingdom Monera .In this kingdom all organism are single celled and do not have well defined nucleus i.e. prokaryotic cell
2. Diatoms are kept under kingdom Protista. In this kingdom all organism are single-celled and have well defined nucleus i.e. eukaryotic cell
3. Algae are kept under kingdom animalia .In this kingdom all organism are multi-celled and have well defined nucleus i.e. eukaryotic cell
4. Yeast are kept under kingdom fungi .In this kingdom both single and multi-cellular organism is present. yeast is single -celled and have well defined nucleus i.e. eukaryotic cell