All terrestrial life forms are divided into kingdoms and are farther broken down into phylum, classes, order, family, genus, and species. Before kingdoms though, there are domains. There are three domains: Archaea, Eubacteria, and Eukaryota. There are four kingdoms: Protista, fungi, plantae, and animalia. These are just the first couple steps in classifying living things. This system has been around for a while and has been altered and revised many times due to new discoveries and advancements. Within each kingdom, species are farther classified into groups based on similarities. For example, the full classification of a human is:
Domain- Eukarya
Kingdom- Animalia
Phylum-chordata
(subphylum- vertabrata)
class- mammalia
order- primates
family- hominidae
genus- homo
species- sapiens.
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Brian does not have any questions, therefore no answers can be posted. Way to go Brian, way to go.
ReplyDeletegoodness.. i forgot the questions. can't have that.
ReplyDelete1. Why was this system invented and how does it help us?
2. Name some characteristics of the Phylum: Arthropoda and give 3 examples.
3. What is the difference between prokaryotic and eukaryotic?
1.) This system was created to avoid confusion between scientists, therefore creating one main system to which all could communicate in binomial nomenclature. It helps us because now Leroy Mcnugent cant call a platypus a Flogoris platorialis, rather he calls it Ornithorhynchus anatinus.
ReplyDelete2.)
1. Segmented body.
2. Paired segmented appendages.
3. Bilateral symmetry.
4. Chitnous exoskeleton.
5. Tubular alimentary canal with mouth and anus.
6. Open circulatory system, a tubular dorsal blood vessel.
7. Body cavity or coelom.
8. Nervous system of anterior ganglia and paired nerve cords.
9. Striated muscles in skeletal system.
10. Respiration by gills, tracheae, or spiracle. Some examples would include:
spiders, mites, insects.
3.)The main difference between prokaryotic and eukaryotic cells is that eukaryotic cells have a nucleus, which is the control center of a cell and houses DNA. Another difference is that eukaryotic cells have organelles such as a mithocondria and chloroplasts. These vital organelles are mainly involved in metabolism and energy conversion. Also, eukaryotic cells can reproduce through mitosis and meiosis.