Invertebrates

1. Invertebrates Harcourt Science Unit B Chapter 3 Mrs. Strand 6th grade Lockwood Middle School

2. Key Characteristics • What are two characteristics of invertebrates? No _______________________ Many have ________________________ View Invertebrates CD Intro

3. Comparative Study of Invertebrates Due before test

4. Invertebrates • Terms • Vertebrates • Invertebrates • Endoskeleton • Exoskeleton

5. Two Types of Animals • All animals have the same basic needs • F______ • If you want to guess what the animal eats, look at its _______. • Animals eat food to gain energy, but… • O______ • Animals can’t make _________ without oxygen. • W_______ • All animals are made up of cells which are made up mostly of ___________r. • P__________ • Animals need protection from _______ and from __________. • Some adaptations include…

6. Invertebrates (96% of animal kingdom) • May have _____skeletons • May have j______ • May have _________ • Invertebrates Environments • They’re _______________! Do WB pg 73

7. Sponges, Cnidarians, & Worms • Terms • Sponge • Cnidarian • Flatworm • Roundworm • Parasite • Segmented worm

8. Sponges, Cnidarians,& Worms • Sponges • Filter ________ for food • Only _______ layers of cells • Some specialized cells to channel _______ or carry _______ to other parts of the sponge • Skeleton is formed by ________ of spicules • Most live in ________ _______ __________ • Most reproduce _____________, but not all Color sponge picture

9. sponge Watch video segment Biology Animals: sponges

10. http://images.google.com/imgres?imgurl=http://www.vattenkikaren.gu.se/fakta/arter/cnidaria/overcnid/nasssys.gif&imgrefurl=http://www.vattenkikaren.gu.se/fakta/arter/cnidaria/overcnid/nass10e.html&h=535&w=387&sz=16&hl=en&start=20&tbnid=rYEezAAhEtSguM:&tbnh=132&tbnw=95&prev=/images%3Fq%3DCnidarians%26gbv%3D2%26svnum%3D10%26hl%3Den%26sa%3DGhttp://images.google.com/imgres?imgurl=http://www.vattenkikaren.gu.se/fakta/arter/cnidaria/overcnid/nasssys.gif&imgrefurl=http://www.vattenkikaren.gu.se/fakta/arter/cnidaria/overcnid/nass10e.html&h=535&w=387&sz=16&hl=en&start=20&tbnid=rYEezAAhEtSguM:&tbnh=132&tbnw=95&prev=/images%3Fq%3DCnidarians%26gbv%3D2%26svnum%3D10%26hl%3Den%26sa%3DG • Cnidarians • All have the ability to _________________. • All are _____________. • The mouth is connected directly to the ___________ of the body. • Wastes leave through the ___________. • Don’t have s___________, but do have t__________. • All live in water, most in sea water. • Have _____________ symmetry. Color cnidarian picture

11. Cnidarian Watch video segment Biology Animals: Cnidarians & Echinoderms

12. http://cache.eb.com/eb/image?id=33746&rendTypeId=4 • Worms • Have ____________ symmetry. • Flatworms • Flat bodies • Digestive system with __________ opening • Simple n_______ s_________ in the head (eye spots) • Planarians have mouth at the end of a long tube. • Have reproductive systems. • Reproduce ___________ • Can r_______________ parts. http://creatures.ifas.ufl.edu/misc/land_planarians_photo1.htm

13. Roundworm • Roundworms • Have round, tube-like bodies • Most are too _______ to be seen with the naked eye • Live in _____ types of environments. • Have ____________ system with two openings. • Muscles run _______________. • Have a _________ _________ with a brain and simple sense organs. • Reproduce ____________. • Many _________ the organisms in which they live. (hosts) • Parasitic Worms • ___________ the host while __________ themselves. • Frequently have _________ life cycles. • Examples include h__________ and trichinella. http://www.warrenphotographic.co.uk/mdh/04912.htm

14. Segmented Worms • Made up of connected ____________. • Bodies are more _________ than other worms. • Breath through their ________. • __________ goes right into the circulatory system. • Waste leaves the body through the anal pore. • Have two sets of __________. • Reproduce _____________. Watch video segment Biology Animals:Worms Color worm picture Do WB pg 78

15. worms

16. worms

17. worms

18. Mollusks, Arthropods, & Echinoderms • Terms • Mollusk • Arthropod • Arachnid • Insect • Echinoderm

19. Mollusks, Arthropods, & Echinoderms • Mollusks • More ________ than any animals studied before • Has a ________ body with no ________ • “mollus” = soft • Most have a hard _________ for protection • This shell grows within their body and is formed by the ____________ • Mollusks have a muscular “foot” • Mollusks reproduce __________ • Release sex cells into water, fertilized eggs mature to larvae, and then adults Some are bi________ and some are uni_________ • Examples are clams, oysters, slugs,snails, squid and octapods Watch video segment Biology Animals:Mollusks Color Land Snail

20. snail

21. snail

22. Arthropods • By far the l______________ phylum of animals (1million+species) • Have jointed exo____________ • Muscular system allows for ________ movements • Skeleton does not ________ as animal grows • All have legs, a digestive system with ____ openings, a c__________ s________ and a b_________ • Many have well-developed organs for s_____, s____ and t_________ • Reproduce _______________ • Female lays f_____________ eggs • Examples include: beetles, butterflies, spiders, shrimp, centipedes and scorpions Watch video segment Biology Animals:Arthropods Color spider pictures (2)

23. Spider

24. Helpful & Harmful Arthropods • Fewer that 1% of arthropods are harmful Color ant & lobster pictures http://www.learningtreasures.com/suite101/arthropods.jpg

25. ant

26. lobstert

27. Echinoderms • Have endo_____________ • “echino” = spiny “derm” = skin • Live only in __________ • Examples starfish, sand dollars sea urchins, and sea cucumbers • No b_______ • ___________l symmetry for body • Mouth is at ___________ of underside of body with powerful jaws • Tube ___________ • Most reproduce ___________, but may also ___________ body parts http://kentsimmons.uwinnipeg.ca/16cm05/1116/16anim5.htm Color starfish picture Do WB pg 83

28. starfish

29. Controlling Pests • This would be a great article to research for extra credit :-) pg B94-B95 Fill out graphic organizer Do WB pg 84