Science 9 Unit A Biological Diversity Section1.2 Lesson Interdependence

8,602 views

Published on

Interdependence
Mutualism
Parasitisism
Resource Partitioning
Co-Habitation

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
8,602
On SlideShare
0
From Embeds
0
Number of Embeds
38
Actions
Shares
0
Downloads
128
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Science 9 Unit A Biological Diversity Section1.2 Lesson Interdependence

  1. 1. Science 9 Unit A: Biological Diversity Science InAction Section 1.2: Pages 16-19
  2. 2. Lesson #2: Interdependence <ul><li>Learner Outcomes </li></ul><ul><li>I can investigate and interpret dependencies among species that link the survival of one species to the survival of others </li></ul><ul><li>I can identify examples of niches, and describe the role of variation in enabling closely related living things to survive in the same ecosystem </li></ul>
  3. 3. What are Niches? <ul><li>Niche is the role of an organism within a particular ecosystem. Includes: </li></ul><ul><li>1. What it eats. </li></ul><ul><li>2. What eats it. </li></ul><ul><li>3. Its habitat. </li></ul><ul><li>4. Nesting site, range and habits. </li></ul><ul><li>5. What effect it has on the other populations. </li></ul><ul><li>6. What effect it has on the environment. </li></ul>
  4. 4. Describe the different types of interdependencies between and among species. <ul><li>Interdependence – ongoing relationship between organisms - SYMBIOSIS </li></ul><ul><li>Commensalism – One benefits, other does not benefit or is harmed. </li></ul><ul><li>Mutualism – Both benefit. </li></ul><ul><li>Parasitism – One benefits, other is harmed. </li></ul><ul><li>Interspecies Competition –Two or more species need the same resource. </li></ul>
  5. 5. Commensalism <ul><li>Some examples </li></ul><ul><li>Barnacles adhering to the skin of a whale or shell of a mollusk </li></ul><ul><li>Sea anemone and clownfish </li></ul><ul><li>Cattle Egrets and Cows </li></ul>
  6. 6. Mutualism <ul><li>Some examples </li></ul><ul><li>Hummingbirds and flowers </li></ul><ul><li>Bull Horn Acacia and ants </li></ul><ul><li>Lichen on a mangrove tree </li></ul>
  7. 7. Parasitism <ul><li>Some examples </li></ul><ul><li>Head louse on human </li></ul><ul><li>Mosquito on animal </li></ul><ul><li>Tapeworms </li></ul>
  8. 8. What is Co-Habitation <ul><li>Species that live within a common place and use the same resources. Mutual benefit . </li></ul>
  9. 9. Resource Partitioning <ul><li>… is the action which enables competing species to share the resources by accessing these resources in different ways, involving less direct competition. </li></ul>Three species of Warbler species feed on spruce bud worms in different parts of a tree.
  10. 12. Sample Multiple Choice Question <ul><li>This type of arrangement described above is called </li></ul><ul><li>Natural selection </li></ul><ul><li>Artificial selection </li></ul><ul><li>Resource partitioning </li></ul><ul><li>Specialization </li></ul>Q1 When similar species coexist in an area, they have slightly different niches. They do not compete for resources, instead they divide the resources between them.
  11. 13. Sample Multiple Choice Question <ul><li>The association of an orchid and a mesophytic plant is an example of </li></ul><ul><li>Mutualism </li></ul><ul><li>Commensalism </li></ul><ul><li>Parasitism </li></ul><ul><li>Saprophytism </li></ul>Q2 Epiphytes are plants that grow on sturdier plants. They do not take nourishment from their host and simply benefit from being exposed to sunlight. An orchid is an example of an epiphyte.
  12. 14. Sample Multiple Choice Question <ul><li>The adaptive value of the monarch’s colour pattern is necessary in order to </li></ul><ul><li>Warn predators so they do not try to eat the monarchs </li></ul><ul><li>Help the monarch find a mate </li></ul><ul><li>Help the monarchs to organize themselves into flocks </li></ul><ul><li>Camouflage the monarch amongst colorful flowers. </li></ul><ul><li>Through the viceroy butterfly has no poison in its wings, the colour pattern on its wings is similar to that of the monarch’s. Such and adaptation is known as </li></ul><ul><li>Specialization </li></ul><ul><li>Selective breeding </li></ul><ul><li>Mutualism </li></ul><ul><li>Mimicry </li></ul>Q3 Q4 During the caterpillar stage of development, monarch butterflies eat poisonous milkweed leaves. As they become adult butterflies, the poison is deposited in the brilliantly coulered black and orange butterfly wings.
  13. 15. Sample Multiple Choice Question <ul><li>The association of a a bee and a clusia is an example of </li></ul><ul><li>Parasitism </li></ul><ul><li>Commensalism </li></ul><ul><li>Mutualism </li></ul><ul><li>Heterotrophism </li></ul>Q5 As a bee pollinates clusia flowers, it is covered with a sticky resin that contains a powerful antibiotic. This antibiotic kills bee bacteria in the bee hive.
  14. 16. Answers to Sample Multiple Choice Questions <ul><li>C </li></ul><ul><li>B </li></ul><ul><li>A </li></ul><ul><li>D </li></ul><ul><li>C </li></ul>
  15. 17. Did you ... <ul><li>... investigate and interpret dependencies among species that link the survival of one species to the survival of others? </li></ul><ul><li>... identify examples of niches, and describe the role of variation in enabling closely related living things to survive in the same ecosystem? </li></ul>
  16. 18. Assess Your Learning Questions <ul><li>Page 25 </li></ul><ul><li>Questions 1-8 </li></ul><ul><li>Societal and Environmental Context </li></ul><ul><li>Questions 1-2 </li></ul><ul><li>(for lessons #1 and #2) </li></ul>
  17. 19. AYL – page 25, 1-8 <ul><li>Question 1 </li></ul><ul><li>Write a definition of biological diversity that includes a description of its three main components. ______________________________________________________________________________________________________________________________ </li></ul><ul><li>Question 2 </li></ul><ul><li>Define the terms niche and symbiosis. Explain how these terms are related. </li></ul><ul><li>Niche: _________________ _____________________ </li></ul><ul><li>Symbiosis: _____________ _____________________ _______________________________________________________________ </li></ul>
  18. 20. AYL – page 25, 1-8 <ul><li>Question 3 </li></ul><ul><li>How does variability within a species affect its survival? ___________________________________________________________________________________________________________________________________________________ </li></ul><ul><li>Question 4 </li></ul><ul><li>Using examples, explain ways in which different species living within an ecosystem depend on one another. _________________________________________________________________________________________________________ </li></ul>
  19. 21. AYL – page 25, 1-8 <ul><li>Question 5 </li></ul><ul><li>How does natural selection enhance or reduce the variability of a species? Explain your answer using an example. ______________________________________________________________________________________________________________________________ </li></ul><ul><li>Question 6 </li></ul><ul><li>Restate the meaning of interspecies competition in your own words. Use an example to illustrate. ___________________________________________________________________________________________________________________________________________________ </li></ul>
  20. 22. AYL – page 25, 1-8 <ul><li>Question 7 </li></ul><ul><li>How does variation within a species contribute to the health of the species? ________________________________________________________________________________________________________________________________________________________________________ </li></ul><ul><li>Question 8 </li></ul><ul><li>Describe your niche. __________________________________________________________________________________________________________________________________________________________________________________________________________________ </li></ul>
  21. 23. SEC – page 25, 1-2 <ul><li>Question 1 </li></ul><ul><li>Explain how you think biological diversity benefits humans and other forms of life on earth. ______________________________________________________________________________________________________________________________ </li></ul><ul><li>Question 2 </li></ul><ul><li>Almost half of all life forms on the planet are insect. How important is it to preserve those species? Should we be concerned about ensuring that something small not be eliminated? Why or why not? Would it be better off without those insects? Support your answer. </li></ul>
  22. 24. SEC – page 25, #2 <ul><li>____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ </li></ul>

×