1. DO NOW What is symbiosis? What are the three symbiotic relationships?
Reading Check – Questions
What is symbiosis?
What are the three symbiotic relationships?
What is mutualism?
What is commensalism?
What is parasitism?

2. WELCOME
AIM: KWBAT describe and distinguish the main types of ecological interactions: competition, predation, and symbiosis.
KWBAT describe and explain the type of plant tropisms.
Agenda (55 min)
Do Now (5 min)
Do Now Review (5 min)
Notes I (15 min)
Notes II (16 min)
Think-Pair-Share Practice (8 min)
Notes III (16 min)
Think Box #3 (5 min)
Partner Practice (5 min)
Fly-In-My-Head Video (10 min)
Exit Ticket (15 min)
Exit Ticket Review (2 min)

3. Organisms in an ecosystems constantly interact.
Types of Interactions
Organisms in an ecosystems constantly interact.
The three major types of interactions among the organisms in an ecosystem are competition, predation, and symbiosis .

4. 4. A resource could be food, water, light, or space
Competition
3. When two or more organisms seek the same resource that is in limited supply they compete with each other
4. A resource could be food, water, light, or space
5. Competition happens between indiviuals within a population and also between different populations

5. Ex. Wild dogs hunt zebras
Predation
6. A predator is an organism that feeds on other living things. The organism it feeds on is the prey.
Ex. Wild dogs hunt zebras
Predator
Prey
7. Competition and Predation acts a limiting factor on population that keeps ecological balance to avoids starvation or overcrowding.

6. Competition & Predation
8. Predator: eats something 9. Prey: eaten by something 10. Competitors: eat the same thing

7. Interactions DEER, RABBIT, MOUSE, CRICKET SNAKE, RABBIT, MOUSE, FROG
11. In the food web to the right,
the predator of the grass is the ________________
the prey of the hawk is the _________
one competitor of the snake is the ________
DEER, RABBIT, MOUSE, CRICKET
SNAKE, RABBIT, MOUSE, FROG
MOUNTAIN LION, HAWK
PREY ^ = PREDATOR ^
PREDATOR ^ = PREY \/
^ COMPETITOR = YOU \/

8. OWL, SNAKE
SNAKE, MOUSE
MOUSE, INSECT
INCREASE
DECREASE

9. HAWK
CRICKET
SNAKE
DEER, MOUSE, RABBIT
INCREASE
DECREASE

10. Organism in Ecosystems
Habitat: physical area in which an organism lives
A Niche: is the role an organism plays in its environment (how it gets food, finds shelter, and reproduces)
A niche includes all of an organism’s interactions and relationships with the biotic (living) and abiotic (non-living) parts of its environment
Ex. A Bee’s Niche
A bee lives in a bee hive, makes honey, and eats nectar from flowers

11. Symbiosis
Symbiosis: is a close relationship between two organisms that benefits at least one of the species
There are three kinds of symbiotic relationships: Mutualism, Commensalism, Parasitism

12. 5. Mutualism
Mutualism: is a symbiotic relationship in which BOTH species benefit
This little fish is helping me by cleaning my teeth! Yeah!!
I’m eating the big fish’s food so he’s helping me too! Yeah!!

13. Mutualism Example:
Flowers provide food for insects. Insects spread the seeds and pollen of flowers. Both organisms benefit!

14. Ex. Clownfish and anemones
6. Commensalism
Commensalism: is a symbiotic relationship in which one species benefits and the other is neither harmed or benefited
Ex. Clownfish and anemones

15. The interactions are harmful to one species, yet beneficial to another
7. Parasitism
Parasitism: is a symbiotic relationship in which a member of one species benefits and the other species is harmed
The interactions are harmful to one species, yet beneficial to another

16. Parasitism Example: Tape worm
The organism that benefits is called the parasite while
organism that it hurts and lives on is called the host.

17. This is the head of a parasite
This is the head of a parasite. Parasites often grab on to the digestive tracts (intestines and stomachs) of their hosts.

18. What is the relationship?

19. Mutualism, Commensalism, or Parasitism

20. Mutualism, Commensalism, or Parasitism

21. Mutualism, Commensalism, or Parasitism

22. Mutualism, Commensalism, or Parasitism

23. Mutualism, Commensalism, or Parasitism

24. Mutualism, Commensalism, or Parasitism

25. Mutualism, Commensalism, or Parasitism

26. CLOSE RELATIONSHIP B/W TWO SPECIES
TICK
DOG
DOG TICK __ +

27. + + + - +

28. BEES FLOWER
BEES FLOWER + +
MUTUALISM
REMORA SHARK +
COMMENSALISM

29. Page 8 Think (5 min) Pair (3 min) Share (2 min)

30. Think-Pair-Share Page 8
Part I .
MUTUALISM
COMMENSALISM
PARASITISM
COMMENSALISM
PARASITISM
MUTUALISM
MUTUALISM
MUTUALISM

31. FLY IN MY HEAD

32. Plant adaptations
An adaptation is any structure or behavior that increases an organism’s chance of survival or reproduction.
Plants have two major types of adaptations: structural and functional adaptations
Structural adaptations are physical adaptations or structures that can be seen in leaves, stems, roots, flowers, and seeds.
Functional adaptations are related to the way an organism’s body works = response to stimulus.

33. PLANT RESPONSES TO STIMULI:
Stimuli = causes plants to react internally or externally
Examples of stimuli = light, temperature, movement, chemicals, and gravity
Response = an organism’s reaction to a stimulus

34. PLANT RESPONSES TO STIMULI:
Tropism = a plant’s growth in a certain direction in response to a stimulus
Positive tropism = growth toward a stimulus
Negative tropism = growth away from stimulus

35. Types of tropism Phototropism = plant growth in response to light
Plants are positively phototropic to light
Geotropism = plant growth in response to gravity
Roots = positively geotropic = grow down in the soil
Stems and leaves = negative geotropic = grow upward, away from soil
Thigmotropism = plants response to touch
Hydrotropism = plants response to water

37. Plant hormones
18. Hormone = a chemical messenger that is produced in one part of an organism and affects activities in another part of the organism. 19. Auxin = hormones that control phototropism 20. Gibberillins = growth hormones that control plant height and bud development 21. Abscisic acid = hormone that slows or stops growth during droughts or cold

38. Plant adaptations
22. Structural adaptations = seen in leaves, stems, roots, flowers, and seeds. 23. Leaves = where photosynthesis and transpiration 24. Transpiration = causes plants to lose water and prevents photosynthesis form occurring 25. Some plants have waxy coating over their leaves to prevent water loss 26. Some plants have thin needles for leaves to prevent water loss

39. Structural adaptation
27. Roots = where absorption of water and nutrients occur 28. Some plants have shallow roots near surface to absorb water quickly 29. Some plant have seeds that stick to animal fur to enhance reproduction 30. Some plants produce nectar to enhance pollination = plant fertilization

40. Think Box #3 Page 13 . phototropism . tropism thigmotropism
Negative geotropism
geotropism
Positive geotropism
thigmotropism
phototropism

41. Partner Practice Page 14 . Physical adaptation . Abscisic acid
Functional adaptation
Abscisic acid
gibberillins
hormone
Structural adaptation
gibberillins
Structural adaptation
auxins

42. Independent Practice Page 15
Part I
Part II .
Structural (leaf and roots changes) and Functional adaptations (hormones and tropism) .
Plant response to touch
Chemical messenger
Hormone, causes phototropism
Plant growth in a certain direction in response to a stimulus.
Hormone, causes plant growth
Hormone, stops plant growth
Waxy covering
Needle-like leaves
Flowering at night
Plant growth in response to light
Plant growth in response to gravity
Growing the direction of gravity. Growing opposite the direction of gravity

43. SILENTLY CLEAR DESK for exit ticket

44. EXIT TICKET . Part I Part II A . C B C A D B PREDATOR COMMENSALISM + 0
PREY
MUTUALISTISM + + B
PARASITISM + - C B

45. EXIT TICKET
Part I
Part II B . . A A C D D C C D D