Presentation on theme: "2.2 Interactions Among Species (Pages 56-64) Homework: Page 64 # 3-8"— Presentation transcript:
1 2.2 Interactions Among Species (Pages 56-64) Homework: Page 64 # 3-8
2 Key Concepts: (Page 64)Each species occupies an ecological niche, which has biotic and abiotic components.Many species, such as bog plants, occupy narrow niches for which they are well adapted.
3 Predation, competition, mutualism, and parasitism are four major kinds of relationships between species.These relationships help to define a species’ niche and influence the distribution and abundance of the species.
11 Competition:7. What happens when the number of population of certain species in an ecosystem increases?As population of species increase, the competition for resources also increase.
12 8. In the picture are snails that live in shore by the ocean 8. In the picture are snails that live in shore by the ocean. If the population of snails multiples exponentially, what will happen with this small ecosystem?Snails would compete for food, nutrients and space.
14 8. In the picture below are different species of plants that thrive in the rainforests such as ferns, wild palm trees, bamboo and ginger plant. Which plant species do you think will take most of the resources available in order to survive and why?The bamboo plant will take most of the resources available in order to survive because their roots are bigger, they grow taller and they multiply faster.
16 Symbiosis:10. Complete the table below:Symbiosis and TypesMutualism-A symbiotic relationship wherein both species benefit. (corals and algae)Parasitism-An organism that depends on a host for survival.(Tapeworms & Humans)Predation-A biological interaction where a predator feeds on its prey.(Lions & Zebra)Competition-Where organisms fight for resources to survive.(Dandelions & Grass)
17 11. Describe the symbiotic relationship between corals and algae 11. Describe the symbiotic relationship between corals and algae. What causes the color loss associated with bleaching?Algae gives off oxygen and other nutrients to the coral and the coral polyp provides shelter and carbon dioxide to the algae.Algae cause the colour in coral reefs. When they die out, bleaching or whitening occurs.