1t Bricks chapter 4 invertebrates: arthropods

Kingdom of the Animals
Part 2: Myriapods, Crustaceans, Arachnids, Insects
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Cette leçon contient 19 diapositives, avec quiz interactifs, diapositives de texte et 5 vidéos.

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Kingdom of the Animals
Part 2: Myriapods, Crustaceans, Arachnids, Insects

Slide 1 - Diapositive

Welcome to this lesson!
  • Today, we will discuss 4 new animal groups in the kingdom of animals
  • We will also look back on the groups from
    last week
  • In the next few slides, you will find some 
    questions about last weeks lesson

Slide 2 - Diapositive

What do sponges do to catch food?
A
They swim after it
B
They filter water
C
They wait for it to swim by and grab it
D
They have specialized cells with electric pulses

Slide 3 - Quiz

What type of skeleton do Cnidarians have? Explain a bit about how it works

Slide 4 - Question ouverte

What type of skeleton do molluscs have?
A
a kind of a shell
B
Endoskeleton
C
Hydroskeleton
D
Exoskeleton

Slide 5 - Quiz

How do Echinoderms move around?

Slide 6 - Question ouverte

And now the arthropods!
  • Myriapods, 
  • Crustaceans, 
  • Arachnids 
  • Insects

Slide 7 - Diapositive

Arthropods
  • Arthropods are invertebrates
  • They have an exoskeleton
  • They have segmented bodies and legs 
  • Some of them have antennae on their heads
  • Because of the exoskeleton, they cannot grow easily (since the exoskeleton does not grow)
  • For this reason, they have to get rid of the exoskeleton and then develop a new, bigger one. We call this moulting or shedding
Segmented: this means that their body is divided into different parts. Most often, you can very clearly see the different parts.

Slide 8 - Diapositive

Myriapods
  • 10 or more pairs of legs
  • Very segmented (each segment has 1 or 2 pairs of legs)
  • Centipedes: pair of poison fangs, carnivores
  • Millipedes: herbivores
Myria = many
Pods = legs
So, Myriapods means 'many-legged'
In Dutch, we call them 'veelpotigen'

Slide 9 - Diapositive

Slide 10 - Vidéo

Crustaceans
  • Between 4 and 20 pairs of legs
  • Live in water, but can come onto land (they have gills)
  • Often, their legs look very different from each other (front vs back legs)
In Dutch, we call them 'Kreeftachtigen'

Slide 11 - Diapositive

Slide 12 - Vidéo

Arachnids
  • 2 main body parts
  • 4 pairs of legs attached to front part
  • Spiders, ticks, mites and scorpions
  • Can be venomous!

Slide 13 - Diapositive

Slide 14 - Vidéo

Insects
  • 3 main body parts: head, thorax, abdomen
  • 3 pairs of legs + 1 or 2 pairs of wings attached to thorax
  • Can have antennae

Slide 15 - Diapositive

Insects
Insects perform metamorphosis, which means that they have 2 stages during life:
1. Larvae or nymphs
2 Adult stage

Slide 16 - Diapositive

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Slide 17 - Vidéo

Why do we need bees? (and other insects)
  • I can imagine why you would find insects annoying, creepy, or ugly
  • However, they do have a very important job
  • See the next video for that!

Slide 18 - Diapositive

Slide 19 - Vidéo