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5/24 & 5/25 - 7th Grade Agenda Learning Objective: Learn about Snails & arthropods Collect HW: Reading & Notetaking 207– 208 Frog Dissection Video Video:

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Presentation on theme: "5/24 & 5/25 - 7th Grade Agenda Learning Objective: Learn about Snails & arthropods Collect HW: Reading & Notetaking 207– 208 Frog Dissection Video Video:"— Presentation transcript:

1 5/24 & 5/ th Grade Agenda Learning Objective: Learn about Snails & arthropods Collect HW: Reading & Notetaking 207– 208 Frog Dissection Video Video: Life in the Undergrowth Textbook Reading 434 – 436 HW: Reading & Notetaking 210– 211

2 Reflection Prompt: Write 3 questions you have about snails.

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 Some arthropods have blue blood
Horseshoe crabs have blue blood The have hemocyanin (which contains copper) instead of hemoglobin (which contains iron) in their blood They are more closely related to spiders and scorpions Has not changed much in 450 million years

8 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

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

10 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?

11 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

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

13 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.

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

15 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.

16 How big is the world’s largest Insect
Titan Beetle 7 inches long

17 Can you spot an insect here?
Dead Leaf mantis Sand Grasshopper

18 Can you spot an insect here?
Walking stick insect Grasshopper

19 Amphibians evolved from Fish
Mudskipper Fish (Type of Goby Fish) It can live out of water for long periods It can breath through its skin just like Amphibians

20 What are Amphibians? The word amphibian means “double life”
After beginning their lives in water Most amphibians spend their adulthood on land Returning to water to reproduce.

21 Life cycle of an Amphibian

22 Do tadpoles have lungs or gills?

23 Do frogs have lungs or gills?


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