1. Classification

2. Why do we classify things?
Because we are scientists and we like order.
It shows the relationship between organisms.

3. Modern Classification
D – dumb Domain
K – kids Kingdom
P – pick Phylum
C – candy Class
O – over Order
F – fancy Family
G – green Genus
S – salads Species

4. Domain
There are 3
Bacteria, Archaea, and Eukarya
We are focusing on Eukarya because that is where animals are

5. Kingdom
There are 6
Eubacteria, Archaebacteria, Protista, Fungi, Plantae, and Animalia
4 of the kingdoms fall under the domain Eukarya
Protista, Fungi, Plantae, and Animalia

6. Characteristics of animalia
Cell Type: Eukaryote
Cell Structures: No cell walls or chloroplasts
Number of Cells: Multicellular
Mode of Nutrition: Heterotrophic
Examples: Sponges, worms, insects, fishes, birds, and mammals

7. What animals do to survive
Feeding – heterotrophs
Respiration – gas exchange – how do they get oxygen?
Circulation – way of moving materials around in their body
Excretion – getting rid of waste
Response – do something, because of something
Movement – even if the organism stays in the same spot
Reproduction – most animals reproduce sexually

8. Invertebrates
Organized by characteristics that its members do not have
They have no backbone or vertebral column
Over 95% of animals fall in this category

9. Animal tree

10. Embryonic Development

11. Nerdy Science Quote
“The most important moment in your life is not birth or marriage, but gastrulation.”
Gastrulation is when the blastula (pretty much the zygote that has divided a whole bunch) folds – it determines whether or not a protostome or deuterostome

12. Embryonic Development
Protostome - “mouth first” – most inverts
Deuterostome – “second mouth” – echinoderms and vertebrates

13. 3 Germ Layers Ectoderm (outermost) Mesoderm (middle)
Endoderm (innermost)

14. Questions
What does protostome mean?
What does deuterostome mean?

15. Questions What is the middle germ layer?
What is the outside germ layer?
What is the inside germ layer?