Classification of Multi-cellular Organisms

How Are Living Things Grouped?

How are living things grouped? S5L1a.Demonstrate how animals are sorted into groups (vertebrates and invertebrates) and how vertebrates are sorted into groups (fish, amphibian, reptile, bird, and mammal). Target Goal: I can explain how living things are grouped.

Vocabulary Classification [klas•uh•fih•KAY•shuhn] The process of grouping similar things together

Kingdom Vocabulary [KING•duhm] A major, large group of similar organisms

A single kind of organism that can reproduce among its own kind Vocabulary Species [SPEE•sheez] A single kind of organism that can reproduce among its own kind

How are living things grouped? Classification Why do scientist group organisms? There are so many livings organisms on Earth, that scientist use classification to make it easier to study them all.

How are living things grouped? Classification Characteristics scientist use to classify organisms. Number of cells. Single-celled or multi-celled? Source of nutrition. Make its own food or get from other sources? (Producer/autotroph), (Consumer/Heterotroph) Do its cells have a nucleus?

How are living things grouped? Domains Scientists classify living organisms into 3 domains with major, large groups within called kingdoms. Domain Archaea Kingdom-Archaea Prokaryote (No Nucleus) Domain Bacteria Kingdom-Bacteria Prokaryote (No Bacteria) Domain Eukaryota Kingdom-Anamalia Kingdom-Plantae Kingdom-Fungi Kingdom-Protist

How are living things grouped? Domains Domain Eukaryota Kingdom-Anamalia Kingdom-Plantae Kingdom-Fungi Kingdom-Protist

How are living things grouped? Kingdoms Animalia are grouped together because they are made of many cells and feed on other living or once-living things. Plantae also have many cells, but they make their own food.

Grouping Living Things Kingdoms Fungi also are multi-celled organisms, but they don’t make or eat food. They absorb it, from the remains of other organisms. Protists are mostly single-celled organisms. Some make food, as plants do and others take in food like animals and fungi do. 

How are living things grouped? Kingdoms Bacteria (Monera) are all single-celled. Their cells have no nucleus. Most feed the way fungi do, but some make their own food.  Sometimes broke into two groups. Bacteria and Archaea

How are living things grouped? Smaller Groups   Each kingdom includes many different kinds of organisms. Scientists classify organisms into smaller and smaller groups.

How are living things grouped? Smaller Groups A phylum (FY•luhm) is a major group within a kingdom. Phyla are divided into classes. Classes are divided into orders. Orders are divided into families.

How are living things grouped? Smaller Groups Just as in your family, members of the same family share many characteristics. Like human families, they have individual differences. Families are divided into genus, (JEE•nuhs). Each Genus has one or more species, (SPEE•sheez).

How are living things grouped? Smaller Groups A species is a unique kind of organism. Every different kind of living thing has its own scientific name that includes the names of the smallest two groups— genus and species.

How are living things grouped? Smaller Groups For example, the scientific name for the house cat is Felis domesticus. Felis is the name of its genus. The name of its species is domesticus. House cats—and only house cats—have this name.

How are humans classified?

How is a house cat classified

How is a house cat classified