1MAVO-TTO 4.6 vertabrates

• Biologie
• Middelbare school
• mavo
• Leerjaar 1

Schedule

1. 4.6: vertebrates 
2. Working on homework

What is the dutch translation of the word "invertebrates"?

Invertabrates can be devided into 2 groups. What are they?

classification of animals

Animals are divided into invertebrates (ongewervelden) en vertebrates (gewervelden).

Today focus:

 vertebrates

criteria vertebrates

Have a backbone, muscles and an internal skeleton.

the vertebrates can be devided into five groups.

Fish (vissen)

• Live in water (use gills) (kieuwen)
• Cold-blooded (koudbloedig) temperature changes with environment.
• Can be Livebearers (levendbarend), mostly eggs with soft shells fertilized externally.
• Streamlined bodies, wet and slimy scales.

Amphibians (Amfibiën)

• Can live on water and land
• lay eggs with soft shells
• cold-blooded
• don't have scales.
• undergo metamorphosis.

metamorphosis

Which vertebrate has slimy, wet scales on their body? (in English)

Name a criterium of an Amphibian.

Reptiles (reptielen)

• Live on land
• Eggs with leathery shells
• Cold-blooded
• Dry & hard scales
• Breathe using lungs.

Birds (vogels)

• Warm-blooded 
• Eggs  with hard, chalky shells.
• Skin covered in feathers
• Breathe using lungs
• Specialized beaks. 

Which group of vertebrates lays eggs with leathery shells?

Mammals (Zoogdieren)

• Livebearers
• Breathe using lungs
• warm-blooded
• produce milk for their young.

Mammals

• Monotremes (monotremen): mammals that lay eggs.
• Masrupials  (buideldieren): babies that stay with their parents when born, in order to develop.
• Placentals (placentadieren) : fully developed babies 

How do we name a mammals that lays eggs?

1. Monotremes
2. Masrupials
3. Placentals

Homework January 22th (fri)

1. Finish the worksheet (in google classroom) "4.6. Vertebrates" (a google forms document).
2. Make sure to read the pages in your book carefully.
   
3. If you have any questions, you may write them in the chat.
   
4. Finished? Let me know in the chat.