Create a Dichotomous Key and a Phylogenetic Tree

Create your own

DICHOTOMOUS KEY and PHYLOGENETIC TREE

PabloBIO

PROCEDURE

Choose 10 elements and search their images on the internet or draw them

Divide them into two groups according to their characteristics such as shape, size, position, color, texture, material, function...

Divide the first group into two subgroups

Do the same with the second group

Continue dividing the groups according to their characteristics until leaving each element alone

Create a dichotomous key that includes the criteria used to divide the elements in the order used

Draw a phylogenetic tree that reflects the classifications made

1. Choose 10 elements and search their images on the internet or draw them

2. Divide them into two groups according to their characteristics such as shape, size, position, color, texture, material, function...

They do not work with electric power

They work with electric power

3. Divide the first group into two subgroups

They do not work with electric power

Made of metal

Not made of metal

4. Do the same with the second group

They work with electric power

They are used to warm up

They are not used to warm up

5. Continue dividing the groups according to their characteristics until leaving each element alone

Made of metal

His head is pointing

His head is not pointing

It is used to cut

It is not used to cut

6. Create a dichotomous key that includes the criteria used to divide the elements in the order used

a. They do not work with electric power ........ Go to Step 2

b. They do work with electric power ............... Go to Step 3

a. Made of metal ................................................... Go to Step 4

b. Not made of metal ........................................... Go to Step 5

a. It's used to warm up ........................................ Go to Step 6

b. It's not used to warm up ............................... Go to Step 7

a. It's head is pointing ......................................... Go to Step 8

b. It's head is not pointing ................................... It is a spoon

a. It's used to drink .............................................. Go to Step 9

b. It's not used to drink ....................................... It is a dish

a. It's used to cook ................................................ It is a oven

b. It's not used to cook ..................................... It is a microwave

a. It's used to clean ................................ It is a washing machine

b. It's used to clean ............................................... It is a fridge

a. It is used to cut .................................................. It is a knife

b. It is not used to cut ........................................... It is a fork

a. It has a handle ................................................... It is a knife

b. It has not a handle ............................................ It is a glass

7. Draw a phylogenetic tree that reflects the classifications made