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ADVERTISEMENTS: The following points highlight the top four concepts that classify living organisms. The concepts are: 1. Linnaeus’s Two Kingdom Concept 2. Hackel’s Three Kingdom Concept 3. Copeland’s Four Kingdom Concept4. Carl Woese’s Concept. Living Organisms: Concept # 1. Linnaeus’s Two Kingdom Concept: ADVERTISEMENTS: As early as 1758 Linnaeus had scientifically divided living ...
Level 2: Kingdom. The basic taxonomy of living things includes six kingdoms.Each of the three domains (above) is associated with particular kingdoms. Eubacteria (domain Bacteria) - common bacteria like the good bacteria found in yogurt and the bad bacteria that cause bacterial infections; Archaebacteria (domain Archaea) - uncommon bacteria such as those found in environments that are devoid of ...
Here's a sampling: Chordata Phylum, which includes animals that have a backbone, like you. Cnidarian Phylum, which includes animals with soft bodies and tentacles, like jellyfish. Arthropod Phylum, which includes animals with an exoskeleton, or a hard outer skeleton, and jointed legs, like a beetle.
Magnoliophyta Division, or plants with flowers. Coniferophyta Division, or plants with cones. So you may be starting to see how taxonomists divide up organisms, first into domains, then into kingdoms, and then into phyla (or divisions if it's a plant).
After phylum there is class, and there are numerous classes within the Chordata Phylum. You have Aves (birds), Mammalia (mammals), Reptilia (reptiles), and so on. Because this critter has fur, produces milk, and is warm-blooded (among other things), it belongs to the Mammalia Class. After class comes order.
Let's start with the domain and the kingdom. You probably recognize this critter as an animal, so it belongs to the Eukaryota Domain and Animalia Kingdom. What makes it an animal? Well, because it's so large, it is multicellular. And it can't make its own food, like a plant, so it is a heterotroph. And it doesn't look like a fungi, so it must be an animal!
You're a taxonomist, which is a scientist that classifies, or organizes, critters based on similar characteristics.
So far, taxonomists have discovered and classified around 1.75 million species. A species is defined as a group of critters that can interbreed and produce healthy offspring. Classifying that many species may sound like a herculean task, but those darned taxonomists are up for a challenge.
There are 19 orders within the Mammalia Class. Let's look at just a few so you can see how taxonomists classify within the Mammalia Class. There's the Artiodactyla Order, like elk. These mammals have hooves and special stomachs that allow them to eat hard-to-digest food like grass.
Here's a sampling: Chordata Phylum, which includes animals that have a backbone, like you. Cnidarian Phylum, which includes animals with soft bodies and tentacles, like jellyfish. Arthropod Phylum, which includes animals with an exoskeleton, or a hard outer skeleton, and jointed legs, like a beetle.
Magnoliophyta Division, or plants with flowers. Coniferophyta Division, or plants with cones. So you may be starting to see how taxonomists divide up organisms, first into domains, then into kingdoms, and then into phyla (or divisions if it's a plant).
After phylum there is class, and there are numerous classes within the Chordata Phylum. You have Aves (birds), Mammalia (mammals), Reptilia (reptiles), and so on. Because this critter has fur, produces milk, and is warm-blooded (among other things), it belongs to the Mammalia Class. After class comes order.
Let's start with the domain and the kingdom. You probably recognize this critter as an animal, so it belongs to the Eukaryota Domain and Animalia Kingdom. What makes it an animal? Well, because it's so large, it is multicellular. And it can't make its own food, like a plant, so it is a heterotroph. And it doesn't look like a fungi, so it must be an animal!
You're a taxonomist, which is a scientist that classifies, or organizes, critters based on similar characteristics.
So far, taxonomists have discovered and classified around 1.75 million species. A species is defined as a group of critters that can interbreed and produce healthy offspring. Classifying that many species may sound like a herculean task, but those darned taxonomists are up for a challenge.
There are 19 orders within the Mammalia Class. Let's look at just a few so you can see how taxonomists classify within the Mammalia Class. There's the Artiodactyla Order, like elk. These mammals have hooves and special stomachs that allow them to eat hard-to-digest food like grass.