6 Kingdoms: Characteristics

The Science of Classification: The scientific study of how things are classified is called taxonomy . Biologists use classification to organize living things into groups so that the organisms are easier to study.

Major Levels of Classification: Most biologists today classify organisms into 8 levels. First, an organism is placed in a broad group, which is then divided into more specific groups. The more classification levels two organisms share, the more characteristics they have in common.

Domain

Organisms are placed into domains & kingdoms based on: their cell type their ability to make food the number of cells in their body.

Domains There are THREE domains. The domains include: Bacteria Archaea Eukarya

Within the (3) domains, there are SIX kingdoms. 1. 2. 3. 3. 4. 5. 6. 1. Eubacteria (kingdom) 2. Archaebacteria (kingdom)

What did you notice?? There are TWO bacteria domains. Each bacteria domain has ONLY ONE kingdom. There are FOUR kingdoms that make up Domain Eukarya. Eukarya…. Is similar to Eukaryote or Eukaryotic, which means that the cells DO contain a nucleus.

Kingdom Archaebacteria: Domain- Archaea Unicellular- Bodies are one cell big. Prokaryotes - No nucleus Both Autotrophs & Heterotrophs Autotrophs- Makes own food Heterotrophs- Does not make own food Live in very harsh environments-the harshest in the world!(swamps, hot springs, ocean-very salty water-cow intestines, etc.)

Archaebacteria Continued… Archaea comes from the Greek word for “ancient” Scientists think that the harsh conditions in which archaea live are similar to those of ancient earth. So, why are there 2 domains & kingdoms of bacteria? Archaea are classified into a different domain because their structure and chemical make up is much different from that of bacteria.

Kingdom Eubacteria: Domain=Bacteria Unicellular Prokaryotes - No nucleus BOTH Autotrophs & Heterotrophs Known as “True Bacteria” It is everywhere, inside & outside of your body. Some is good for you, while others are harmful. Basic three types: Round Spiral rod-shaped

Round

Spiral

Rod

Kingdom Protista: Domain= Eukarya Mostly Unicellular Eukaryotes- Cells a have nucleus and organelles Both Autotrophs & Heterotrophs

Kingdom Fungi: Domain=Eukarya Mostly multi-cellular Eukaryotes- have a nucleus Heterotrophs

Mold

Kingdom Plantae: Domain=Eukarya Multicellular Eukaryotes- Have a nucleus Autotrophs (most go through photosynthesis)

Kingdom Animalia: Domain=Eukarya Multi-cellular Eukaryotes- Have a nucleus Heterotrophs