Echinoderms & Arthropods

Welcome everyone!
Today: 
Discussing homework (WB page 61)
Explanation about Echinoderms and Arthropods 
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This lesson contains 15 slides, with text slides and 1 video.

time-iconLesson duration is: 58 min

Items in this lesson

Welcome everyone!
Today: 
Discussing homework (WB page 61)
Explanation about Echinoderms and Arthropods 

Slide 1 - Slide

What are we going to learn today? 
What the characteristics of echinoderm and arthropods are. 
How echinoderm feed themselves. 
How arthropods are organized. 
How insect can change during their lives. 

Slide 2 - Slide

Echinoderms
Echinoderm (stekelhuidigen) are sea animals that got their name because they are ''spiny skinned''. Some of them have large spines, some of them have smaller spines. 

Slide 3 - Slide

Echinoderms
Echinoderm have a endoskeleton and can have bilateral, or radial symmetry. They eat clamps by putting their stomachs in their shells. However, some of them are herbivores. 

Slide 4 - Slide

Starfish

Slide 5 - Slide

Get to work!
You have 15 minutes to work out the exercises of paragraph 3.6 in your workbook, starting on page 66. You will have to work quietly. 

Slide 6 - Slide

Arthropods
Arthropods is the biggest phylum, it has the highest amount of different species (75%). Arthropods are characterized by their hard exoskeleton and their segmented bodies. They have bilateral symmetry. 

Slide 7 - Slide

Arthropods
Arthropods are characterized by their hard exoskeleton and their segmented bodies and jointed legs. There are four main arthropod classes: Myriapods, Crustaceans, Arachnids and Insects

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Myriapods
Centipedes and millipedes are part of myriapods. They are worm like arthropods that have at least 2 legs per segment. They are herbivores

Slide 9 - Slide

Crustaceans
Crustaceans are arthropods that live in the sea and have gills. They have at least 8 legs and are omnivores

Slide 10 - Slide

Arachnids
Arachnids are arthropods that have two main body segments. Some arachnids are predators, thus carnivores, such as spiders and scorpions. 

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Insect
Insects is the biggest class. Insects have three main segments: the abdomen, the thorax and the head. All insects have wings connected to their thorax as well. 

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Metamorphosis
Many insect undergo metamorphosis. This means that their body and lifestyle will change drastically. A life of an animal that undergoes metamorphosis have 4 stages: egg, larva, pupa and adult.

Slide 13 - Slide

Slide 14 - Video

Homework
The homework for next lesson will be the exercises of paragraph 3.6 and 3.7. You can work on it now. 

Slide 15 - Slide