Question

BGA ( blue-green algae) are included in which one of the following groups?
A. Protista
B. Fungi
C. Bryophyta
D. Prokaryotes

Answer 1

Hint:-Blue green algae is also known as cyanobacteria. These algae comprise thylakoids. Due to the presence of thylakoids blue green algae are capable of producing their food by photosynthesis. These organisms can live freely. Blue green algae produce a toxin called cyanotoxins that has a harmful impact on animals and humans.

Complete Answer:-
Protista is not considered as fungi, plants, or animals. These are eukaryotes that possess only one cell. It can be located in colony formation. Like other eukaryotes, Protista comprises chloroplast, nucleus, contractile vacuoles, flagellum, etc. Example: Amoeba.
Fungi or fungus are eukaryotic organisms. It contains more than one cell thus it is a multicellular organism. fungi are divided into five major Phylum. These are Chytridiomycota, Zygomycota, Ascomycota, Glomeromycota, and Basidiomycota. Chytridiomycota, Zygomycota, Ascomycota have a harmful effect on humans and other animals, Glomeromycota forms a symbiotic relationship with some plants and Basidiomycotais used as food.
Bryophyta is a group of nonvascular terrestrial plants that comprises nearly 20000 species of plants. Example: Marchantia sp.
Blue green algae or BGA is a prokaryotic cell. It belongs to class Cyanophyceae. Along with photosynthetic property, some blue green algae possess the nitrogen-fixing capability. It can be found in free form or lichen form in the environment.
So the correct answer is option D. Prokaryotic cells.

Note:- Cyanobacteria or blue green algae possess terrestrial habitat but it can be also found in both marine and freshwater. In aquatic habitat, cyanobacteria create algal blooms by increasing rapidly and causing discoloration of the water. Some blue green algae comprise filaments that are named hormogonia.