H3 Animals 1h/v-Bricks

• Nask / Biologie
• Middelbare school
• havo
• Leerjaar 1

Unit 3.1 Animals

Sponges

Cnidarians

Worms

Molluscs

Enchinoderms

Arthropods

Vertebrates

live in the water and are asymmetric

1. sponges
2. worms
3. Molluscs
4. Vertebrates

long bodies, often in shells
(exoskeletons)

1. Cnidarians
2. worms
3. molluscs
4. Echinoderms

have segmented bodies with a hard exoskeleton and joited limbs

1. vertebrates
2. sponges
3. Echinoderms
4. Arthropods

Class: Arthopods ( geleedpotige) 

Myrapods	duizendpoten	1 a 2 pair of legs per segment. morge than 10 pairs of legs
Crustaceans	schaaldieren	between 4 to 20 pairs of legs
Arachnids	spinachtige	4 pair of legs, 2 body segments
Insects	insecten	3 pair of legs, 3 body segments

Fish	vissen	cold blooded, with gills for breathing and covered with scales
Amphibians	Amfibien	cold blooded, adults have lungs for breathing
Reptiles	reptielen	cold blooded, with dry scaly skin, lay eggs on dry land
Birds	vogels	warm blooded, have feathers, wings and beaks. Lay eggs with chalky shells
Mammals	zoogdieren	warm blooded with fur or hair. Lungs to breathe. Females have mammary glands

Class: Vertebrates (gewervelde)

3.4 Worms

Monday 29th of november

• Check if all the Animal passports are uploaded in teams
• Check the exercises 1-4 on page 51 - 52
• Read and make a summary of 3.4 togheter
• Make the exercises 3.4 
• Discuss the questions of the test

3.4 Worms page 63-64

• Open your book on page 63.
• Open your notebook at summary 3.4
• Read when its your turn

Body plan

• long thin bodies
• bilateral symmetric
• no skeleton
• mouth and anus
• many shapes & sizes 

• Three types:

1. segmented worms
2. roundworms
3. flatworms 

Segmented worms

• Also called ringworms 
• The rings are the segments
• eats soil, the soil moves trough the digestive tract (het spijsverteringskanaal)
• food: little pieces of plants and animal matter ( dierlijk materiaal)
• excretes what is left over

Roundworms

• they lack segments 
• bodies look like threads
• live in soil
• some are parasites, living inside animal and plant.
• roundworm infections: eggs live in soil and contaminated faeces. the eggs can get into the body through the mouth. In the intestines your worms wil hatch (uitkomen) from them. 
• parasites causes disease, but do not kill the organisms they feed on.

Flatworms

• Long flat bodies
• simplest bodyplan of all worms
• some have no muscles 
• live in water, absorb food through their skin
• some are parasites, live inside animals and cause problems in their host.

3.5 Molluscs

A Slug

shellfish like a mussel

octopus

squid

cuttlefish

What to do?

• Read page 65 an 66 and make a summary
• Make the exercises 24-30 in your workbook on page  61-62

red: work quiet and alone.

orange: work together and whisper.

green: classical conversation  

friday the 3th of december

• Check the exercises of 3.5 
• Make a picture of your summary of 3.5 and upload it in teams
•  Read 3.7 Arthropods, make a summary
• Make the exercises of 3.7

Kingdom: Animals

Phylum: 

• Sponges ( sponzen): live in water and are asymmetric
• Cnidarians ( neteldieren): have sort and hollow bodies. They show radial symmetry.
• Worms (wormen): Long thin bodies without skeleton. 
• Molluscs (weekdieren): Soft bodies, often in shells (exoskeletons)
• Echinoderms (stekelhuidigen): Spiny sea creatures that show radial symmetry
• Arthropods (geleedpotigen): have segmented bodies with a hard exoskeleton and jointed limbs
• Vertebrates (gewervelde): Animals that have a backbone

Class: Arthopods ( geleedpotige) 

Myrapods	duizendpoten	1 a 2 pair of legs per segment. morge than 10 pairs of legs
Crustaceans	schaaldieren	between 4 to 20 pairs of legs
Arachnids	spinachtige	4 pair of legs, 2 body segments
Insects	insecten	3 pair of legs, 3 body segments

monday 6th of december

• Make the exercises of 3.7
• read 3.8 and make a summary (your best one)
• make a picture of one page of your notes
• upload your photo in teams
• Make the exercises 3.8 

Friday 10th of december

• Test is next Friday about: 3.1 - 3.4 - 3.5 - 3.8   ( not 3.7!)
• Make a summary of 3.8 Vertebrates together  (first part)
• Finish the summary yourself in the same way. 
• Make the exercises of 3.8 

3.8 Vertebrates (gewervelden)

What do vertebrates have in common? 

• a backbone or a spine ( ruggengraat)
• the backbone consists of vertebrae (wervels)
• They have muscles and a endoskelet
• There a five classes: - Fish, amphibians, reptiles, birds, mammals

Fish

• aquatic; they live in water
• lay eggs, fertilised externally, soft outer covering 
• some are livebearers (levendbarend)
• fish are coldblooded; same temperature environment
• bodies covered with scales (schubben)
• bodies are streamlined
• fins for balance and controle movement
• breathe by gills

How do gills work?

• bony fish have gill cover
• cartilaginous fish have gill slits ( shark and stingray (rog))
• gills are made up by gill arches an filaments
• The filaments make a larger surface to take oxygen out. 
• also gills: mayfly nymph, sea slug

Amphibians

• Include Toads, frogs and salamanders.
• Live in moist environments
• skin moist and wet, no scales
• survive in water and land
• breath trough wet skin
• many have lungs too
• lay eggs in water, eggs have a soft slimy scale
• larva of a frog is tadpole; who have gills and live in water. 
• newt lives most of the time in the water, salamander on land

What to do?

• Finish the summary of 3.8 in the same way.
• Make the exercises of 3.8
• 
  
• The test of chapter 3.1 -3.4 -3.5 - 3.8 is next Friday!
• When it the test of chapter 2? (who missed it) 

monday 13th of december

• Check your work: 3.4 - 3.5 - 3.8: the document is on teams
• Study for the test
• Watch the movie about eathworms. (together) 
• make the worm exercise. Document on teams.
• check each other: ask questions for the test.