1. 5/5 & 5/6 - 7th Grade Agenda
Learning Objective: Learn about Arachnids & echinoderm
Collect HW: Reading & Notetaking p.217 – 218
Chap 11 Study Guide
Video: Life in the Undergrowth
Textbook Reading 434 – 445
HW: Reading Guide Section 4 &5
Reminder: Chap 11 Test on 5/12 & 5/13

2. Reflection
Prompt: Draw what a new species of arthropods might look like in 100 million years and describe its features.

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

4. Comparing Arthropods

5. What is Complete Metamorphosis?

6. Caterpillar Anatomy

7. What is Gradual Metamorphosis?

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

9. What is the world’s largest spider?
Goliath bird-eater Spider
Eats mainly insect but will also eat lizards, bats and birds
12 inches long
Lives in South America
Female will eat the male after mating

10. How many eyes does a spider have?
Most have 8 eyes
Some spiders have 6, 4, 2, 0 eyes
But most spiders have 8 eyes

11. How does spiders smell and hear?
Spiders smell and hear with tiny hair on its legs

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

13. Echinoderm’s Body

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

15. Starfish facts They can reproduce sexually and asexually
A sea-star arm can only regenerate into a whole new organism if some of the central disk of the sea star is part of the chopped off arm.
They don’t have a brain, heart or blood
They get their oxygen through their tube feet
They have a skeleton

16. Reflection
Prompt: Write 5 facts from the video.