Dichotomous Keys and Classification

Classifying organisms one step at a time

What is a dichotomous key?

"Dichotomous" means divided in two parts. These help determine what an organism is through a series of choices that lead you to the correct answer

Let's try one!

• Look at the images of the insects.

• Start on question 1.

• Depending on the answer, go where the question tells you to go.

• Stop when your organism has been identified.

Cells....what are they?

-Builiding blocks of life
-Cells can have different functions
-Living things can be MULTICELLULAR, or UNICELLULAR
-Each kingdom will have different characteristics in their cells

Let's compare...a pair!

https://www.britannica.com/video/253817/plant-cells-animal-cells-cell-science-eukaryotic-botany-zoology

Fungi, Protists and Monera

Fungi can be made up of many cells or a single cell
The cells of fungi DO NOT have chloroplasts
Fungi tends to feed off dead organisms
Protists can be multicellular or unicellular, and can contain chloroplasts
Monera are single cell organisms that don't have a nucleus. Bacteria is an example of an organism belonging to the monera kingdom

Mammals

We belong to the mammal group
Mammals are divided into three subgroups
PLACENTALS- those with babies inside the mother, attached with a placenta
MONOTREMES- those that lay eggs, but the babies need milk from the mother. These live only in Australia and New Guinea. Example is the echidna
MARSUPIALS- give birth to live young, but they live in a pouch until fully developed- predominantly found in Australia