Answer:
1. Archaea
2. Protists
3. Heterotrophic
4. Bryophyte
5. Fungi and Animalia
6. Kingdom Archaeabacteria
7. Because they were the only physically observed organisms
Explanation:
1. Archaea is a Domain of living organisms that consists of prokaryotic organisms that are well adapted to survive or thrive in extreme environmental conditions e.g hot springs.
2. Protists are eukaryotic organisms like plants, fungi and animal. The other three Eukaryotes except Protists are monophyletic i.e. they evolved from a single common ancestor. Protists, on the other hand, are not monophyletic because they contain diverse organisms that are closely related to other kingdoms other than Kingdom Protista.
3. Fungi is a group of eukaryotic organisms that cannot produce their own food, hence, they rely on other organisms for their source of energy. Due to this reason, they are termed HETEROTROPHIC organisms.
4. Bryophytes are lower plants characterized by the lack of a true stem and root, instead, they possess an anchoring structure called RHIZOID. They are unable to conduct water from the soil due to their lack of roots. Bryophytes consists of mosses, liverworts and hornworts.
5. Kingdoms Fungi and Animalia consists of organisms that are dependent on other organisms for energy source. The organisms in these Kingdoms are entirely heterotrophic. Kingdoms Plantae and Protista, on the other hand, comprises of organisms that can produce their own food i.e. Autotroph
6. Kingdom Archaeabacteria consists of prokaryotic organisms called ARCHAEA that can thrive in extreme or hostile environments e.g hot springs described in the question. They are well adapted to this kind of conditions and are referred to as extremophiles.
7. All living organisms were once classified as plants or animals depending on the features that were physically observed by scientists in them. This two-kingdom classification was done on the basis of the mode of nutrition and locomotion of organisms.
