DUE DATE: PR-Friday DW: Earthworm Activity

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1 AGENDA ABSENT BLOCK 9/10 & 9/171 week-5 TOPIC: Ecology Organization OBJ : 1-3 DO NOW: List the 5 levels of ecology WITHOUT looking at your NOTES! EXT: Obj/Vocab & Progress Report DUE DATE: PR-Friday DW: Earthworm Activity DW-2.1 App. Notes -Progress Reports -Earthworm Activity HANDOUTS to PICK-UP: -Progress Report -Earthworm Activity TURN IN to ABS box: SEMINAR 2: Ecosystems-Interactions BEFORE/AFTER SCHOOL: DW-2.1 App. Notes Organism Population Community Ecosystem Biosphere EXIT: Fill in your level of understanding AND compare and contrast a habitat and a niche.

2 OBJECTIVES 1- --EXPLAIN why ecology is important 2- --COMPARE & CONTRAST abiotic factors with biotic factors IDENTIFY/DESCRIBE the 5 different levels of organization in ecology Add to objectives EVERY night as REVIEW!!

3 TUESDAY TUESDAY: 9 / 9 OBJECTIVE # NA TOPIC: Common Assessment Daily Grade- NONE DW GRADE: 2 1 0

4 BLOCK BLOCK: 9/10 / 9/11 OBJECTIVE # 1-3 TOPIC: Ecology Organization Daily Grade- 2.1 Book pages & 2.1 App. Notes DW GRADE: 2 1 0

5 Habitats specific environments in which organisms live

6 unique living arrangement of an organism defined by its habitat, food sources, time of day it is most active, and other factors Niche

7 Symbiosis Sym biosis = Together Living Definition: Symbiosis is a close ecological relationship between the individuals of two (or more) different species.

8 Who Benefits? Sometimes a symbiotic relationship benefits both species, sometimes one species benefits at the other's expense, and in some cases neither species benefits.

9 Types of Interactions Commensalism, Mutualism, and Parasitism are all examples of symbiotic relationships.

10 One species benefits, the other is unaffected Commensalism

11 Both species benefit from the interaction Mutualism

12 One species benefits (parasite), the other is harmed (host). Parasitism

13 LAB: LIVE EARTHWORMS LEARNING OBJECTIVE: -DEMONSTRATE the importance of comprehensive observations -DESCRIBE how an earthworm responds to different stimuli. -INFER how physical and behavioral characteristics of earthworm reflect adaptations to its environment. PROBLEM(s)/QUESTION(s): How does the type of environment affect the physical/characteristic response an earthworm will have? -wet / dry -light / dark READ background info -HIGHLIGHT info that relates to PROBLEM/QUESTION

14 BACKGROUND INFO Earthworms are classified as annelids, or segmented worms. They have digestive, circulatory, and nervous systems. Gas exchange is through the skin. They live in rich soil, which they eat, digesting the organic matter in it and passing the inorganic dirt particles out of the body. Earthworms are not very mobile animals. They spend their lives in one small area and as a result do not encounter many other earthworms. Their reproductive strategy is well suited for this type of life. Each earthworm is a hermaphrodite- it has both female and male sex organs. Any individual earthworm can cross fertilize with any other earthworm it encounters.

15 Discuss With Partner IDENTIFY IV/DV: Does the type of environment affect the physical/characteristic response an earthworm will have? INDEPENDENT VARIABLE: -ENVIRONMENT DEPENDENT VARIABLE: -WORM S RESPONSE

16 COOPERATIVE LEARNING LAB GROUP(3-5 students) -working TOGETHER as a cooperative group to COMPLETE TASK -EVERY TEAM MEMBER has a job and participates EQUALLY 1-READ THROUGH EACH TASK (silently or together) 2-DISCUSS (use POSITIVE communication) 3-ANSWER 4-MOVE ON (only when ALL team members understand) QUESTIONS? s -each other CLARIFICATION -Asking Mrs. Cohan for clarification NOT answers. FYI -discussion within COLORED group ONLY

17 LAB: LIVE EARTHWORMS GATHER MATERIALS / ORGANIZE TEAM 3 minutes BACKGROUND OBSERVATIONS # minutes

18 LAB: LIVE EARTHWORMS

19 LAB: LIVE EARTHWORMS

20 LAB: LIVE EARTHWORMS TEST 1 WET/DRY 10 minutes [ANSWER IV/DV, HYPOTH 1 st ]

21 LAB: LIVE EARTHWORMS TEST 2 LIGHT/DARK 10 minutes [ANSWER IV/DV, HYPOTH 1 st ]

22 LAB: LIVE EARTHWORMS TEST 1 WET/DRY 10 minutes [ANSWER IV/DV, HYPOTH 1 st ] TEST 2 LIGHT/DARK 10 minutes [ANSWER IV/DV, HYPOTH 1 st ] CLEAN-UP 2 minutes CONCLUSION / ANALYSIS QUESTIONS 5 minutes -complete STATEMENTS -DISCUSS as TEAM / write OWN answer -When COMPLETED and READY TO REVIEW: TABLE SEAT CLASS REVIEW / EDIT / DISCUSS 15 minutes

23 LAB: LIVE EARTHWORMS 3A-Describe the worm s response to being put ventral side up: -contract / flip over 4A- Why is this important? (hint background info) -moisture for eggs / holding pouch 5A- What function do you think the setae serve for the earthworm? -grip soil / help worm move 6A- Describe the worm s response: -wiggle / curl up 6B- Explain why you think the worm responds this way: -escape /

24 LAB: LIVE EARTHWORMS

25 LAB: LIVE EARTHWORMS TEST 1 -- WET/DRY VARIABLES: Independent variable: ENVIRONMENT (wet/dry) Dependent variable: RESPONSE (worm s movement) HYPOTHESIS: If (IV), worm exposed to a wet / dry environment then (DV). the worm will move towards the wet environment

26 LAB: LIVE EARTHWORMS 8A-JOURNAL: Observe/record the worm s responses/reactions. -moved towards wet towel / moved away from dry 8B-Does the worm move toward the wet towel or the dry towel? - wet 8C-Analyze why you think the worm has this response/reaction. -natural surroundings are moist (damp) underground / 8D- Was your hypothesis correct? YES NO

27 LAB: LIVE EARTHWORMS

28 TEST 2 -- LIGHT/DARK VARIABLES: Independent variable: ENVIRONMENT (light / dark) Dependent variable: RESPONSE (worm s movement) LAB: LIVE EARTHWORMS HYPOTHESIS: If (IV), worm exposed to a light /dark environment then (DV). the worm will move towards the dark environment

29 LAB: LIVE EARTHWORMS 9A- JOURNAL: Observe/Record the worm s response(s) -stopped moving, curled up, moved away, color change 9B- Explain how might this sensitivity to light be an adaptation to the earthworm s way of life? -sensitivity to light / adapt to living below lighted surface 9C- Was your hypothesis correct? YES NO

30 LAB: LIVE EARTHWORMS

31 LAB: LIVE EARTHWORMS CONCLUSION / ANALYSIS QUESTIONS: 1- Based on the results of your experiment(s), what is the ideal environment for an earthworm? 2- IDENTIFY 2 extension questions you have about earthworms: List 2 more variables you could change and test for further studies:

32 EXIT FILL-IN: level of understanding of today s objective 1- --EXPLAIN why ecology is important 2- --COMPARE & CONTRAST abiotic factors with biotic factors IDENTIFY/DESCRIBE the 5 different levels of organization in ecology EXIT ACTIVITY: Fill in your level of understanding AND compare and contrast habitat and niche.

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