1. 5/3 & 5/4 - 7th Grade Agenda
Collect HW: Reading & Notetaking 207 – 208
Arthropod & Echinoderms
Froguts Lab (Starfish)
Textbook Reading 434 – 438
HW: Reading Notetaking 209 – 212

2. Reflection
Prompt: Write 3 questions that you have about spiders

3. What are Arthropods? Arthro = “Jointed” Pod = “Foot” Insects Spiders
Scorpions
Lobster
Crab
Shrimp
Centepedes

4. Comparing Arthropods

5. What are Crustaceans? two or three body sections
five or more pairs of legs
two pairs of antennae.

6. Crustaceans

7. What is Metamorphosis?
Process in which an animal’s body undergoes dramatic changes during its life cycle
This is a picture of a Crab Larva

8. What are Arachnids? Ticks, Mites, Scorpions & Spiders
two body sections
four pairs of legs

9. Which type of animal is most numerous in the world?
Insects! 73% of all animal species are insects.
Which type of animal is most numerous in the world?

10. What are the characteristics of insects?
Invertebrates (Doesn’t have a backbone)
Exoskeleton (Exo = outside, skeleton)
Arthropod (Arthro = joined, Pod = Leg)
3 pairs of legs
1 pair of antennae
Most insects have wings

11. What are Insect’s Three Body Sections?
Head
Thorax
Abdomen

12. What is found on an insect’s Head?
Head: Most of an insect’s sense organs, such as the eyes, mouth and antennae, are located on the head.

13. What is found on an insect’s Thorax?
Thorax: An insect’s midsection is the section to which wings and legs are attached.

14. What is found on an insect’s Abdomen?
Abdomen: Inside the abdomen are many of the insect’s internal and sexual organs. Small holes on the outside of the abdomen allow air, which contains oxygen, to enter the body.

15. What are some examples of Echinoderm?
Star Fish
Sea Urchin
Sea Cucumber
Sand Dollar

16. What are the characteristics of Echinoderms?
Echino = “Spiny”, Derm = “Skin”
Endoskeleton: Endo = inner, skeleton
Five part radial symmetry
Internal fluid system: Water vascular system

17. Echinoderm’s Body

18. Echinoderms are more closely related to humans than sponges
Starfish Larva
(Bilateral Symmetry)
Mature Starfish
(Radial Symmetry)

20. Grasshopper Poster p.413 Draw the grasshopper
Label the Abdomen, Thorax, Head
Describe what is found in the Abdomen, Thorax, Head