Like the first living creature that no one even can say what it was.
The word creature only vaguely referred to any organism within the taxonomic “kingdom“ of Animalia (animals)…which would ignored the other 2 kingdoms of multicellular eukaryotic groups:
The word also ignored another kingdom of eukaryotes that are unicellular organisms - the Protista (protists).
The word ”eukaryote” referred to the taxonomic “domain” Eukaryota” (eukaryotes), in which organisms (be they “unicellular“ or “multicellular“ eukaryotes), have cellular structures that contain
“membrane-bound” nucleus, plus possibly an
“membrane-bound” organelle or more organelles.
Think of nucleei and organelles as compartments or subunits. All eukaryotes have eukaryotic cells, and each individual cell contain a nucleus, but may or may not have 1 or 2 organelles.
I don’t much about fungi or about protists, but most photosynthetic-capable plants have cells, have an organelle that housed all the photosynthetic functions, such as the cells of plant’s leaves would individually have an organelle known as the plastid, and that contained the chloroplast, and this chloroplast (organelle) would include the green-pigment chlorophyll. It is this chlorophyll that do all the photosynthesis process:
- the root of plants draw water from the soil, and channeled the water all the ways to the leaves,
- while at the same time, the leaves would draw and trap carbon dioxide from the air,
- the green pigment of the chlorophyll is what capture the sunlight radiation (eg ultraviolet), and the ultraviolet served as a catalyst for chemical reaction of photosynthesis:
- the chain reaction would convert water and carbon dioxide into sugar (starch) and oxygen. The starch or sugar is the energy source that keeps plants alive.
No animals I know of, have plastid as organelle. Instead, animals have organelle in their cells called mitochondrion. Animals have two types of DNAs: One DNA is housed in the nucleus, hence this DNA is often referred to nuclear DNA or shortened to nDNA; all other eukaryotes (eg plants, fungi, protists) have their own nuclear DNA. While the mitochondrion (organelle) in animal cells, has the mitochondrial DNA or mDNA. (Note that plants have a plastid DNA or chloroplast DNA.)
The Eukaryota leads to another 2 domains:
- domain Bacteria
- domain Archaea
Both Bacteria and Archaea are grouped together as unicellular prokaryotic organisms or simply as prokaryotes or Prokaryota.
The reasons why the prokaryotes are called that, is that a prokaryote has cellular structure (or prokaryotic cell) that have no nucleus and no organelles. Instead, the prokaryotic cell is enclosed by cell wall.
That’s how eukaryotes differed from prokaryotes, their cells differed between one group from the other.
in any case, the word creature don’t apply to plants, fungi, protists, archaea and plants. The word “creature“ only applied to animal, and we know that not organisms are not animals.
i think I have corrected you before with your usage of the word creature, but like as every other creationists I have met at RF, you are incapable of learning from your mistakes, so you’ll keep repeating mistakes in the future.
Plants are not creatures
Fungi are not creatures
Archeaea are not creatures
Bacteria are not creatures
Both archaea and bacteria have around for at least 3.5 billion of years. Animals have only been around less than 800 million of years.
The earliest animals were invertebrates, of which the best known are that of primitive sponges. Sponges existed as early as the Ediacaran period (635 to 539 million years ago). So far, I have yet to see fossils of sponges in the Cyrogenian period. There are other Ediacaran animals, but I don’t remember them by names, and I am less with the non-sponge families and species.