Who proposed tha term protista?

Answer 1

Protista is one of the four generally accepted kingdoms in the superkingdom Eukaryota. Biologists generally accept the following kingdoms:-

Superkingdom Prokaryota - single celled organisms with no distinct cell nucleus

kingdom Monera - bacteria (is an argument for 2 Eubacteria % archebacteria

Superkingdom Eukaryota

kingdom Animalia - multicelled organisms with no organelles other than nucleus

kingdom Plantae - nutrition derived from photosynthesis via chloroplasts

kingdom Fungi - don't photosynthesize - nutrition from rotting organic matter

kingdom Protista - see distinction below

Many biologists do not include viruses because 1) there are no free living forms 2) they are totally dependant on there host for reproduction. On the other hand 1) they do have an existence of their own separate to the host and 2)are subject to natural selection.

Prions are also arguably alive for the same raasons.

These divisions have been built up and generally agreed upon over centuries. No one scientist can be sttributed with the discovery of a "protist". They have been continually discovered since the invention of the microscope. Before the divisions above, life on Earth was once divied into only plants and animals.

Protists are difficult to define. Many share characteristics with fungi, some with animals and some with plants. They are generally single celled but when they join together and form structures such as filaments, the cells are all still identical.

Answer 2

The term Protista (for a new kingdom) is first proposed by Ernst Haeckel in 1866 to include eukaryotic unicellular or simple multi-cellular organisms in it that did not fit into the other kingdoms.