PPT-Parasitism ( i ): The parasite niche

CfE Advanced Higher Unit 2 Organisms and Evolution SQA mandatory key information Parasites tend to have a narrow niche as they have high host specificity and may lead to parasites which are degenerate They are lacking in structures and organs found in other organisms . Essential Questions. What is symbiosis?. List and describe (in your own words) the 5 main types of symbiosis.. Give an example for each type of symbiosis.. How Species Interact with Each Other. -Niche:. Symbiosis. Abiotic Factors. Topography. Temperature. Water. Abiotic Factors. Soil Content. Sunlight. Communities and Populations. Communities . Assemblage of different populations that live together in a defined area.. Predation. The capturing of prey as a . means of maintaining life. One organism benefits . One organism is killed. Competition. Competition. – A rivalry between organisms for the same resources; The fitness of one of the organisms is lowered by the presence of another.. 3 types of Symbiosis. It literally means “together life”. It refers to organisms that live in close approximation; often they cannot live without each other.. Top flap). Parasitism (right flap). i. ): . The parasite niche. CfE . Advanced Higher. Unit 2 Organisms and Evolution. SQA mandatory key information. Parasites tend to have a narrow niche as they have high host specificity and may lead to parasites which are degenerate. They are lacking in structures and organs found in other organisms. . Transmission and virulence. CfE. Advanced Higher Biology. Unit . 2: . Organisms and Evolution. SQA . mandatory key information. Transmission is the spread of a parasite to a host. Virulence is the potential of a parasite to cause harm to a host. A higher rate of transmission is linked to higher virulence. Factors that increase transmission rates include the overcrowding of hosts at high density, or mechanisms that allow the parasite to spread even when infected hosts are incapacitated. Vectors and waterborne dispersal stages are examples of the latter. . Unit 2 – Organisms and Evolution. Parasitism. A: Ecological niche and competition. B: Parasite niches. C: Transmission and host behaviour. D: Parasitic life cycles. E: . Immune response to parasites. 10. 9. 8. 6. 5. 4. 3. 2. 1. Ecological Niche. The role played by an organism in a biological community: its food preferences, its requirements for shelter; its special behaviors, and the timing of its activities (nocturnal or diurnal). . it reduces costs and risks of caring for young.. ants, wasps, birds, fish. Brood parasitism. Cuckoo being . fed by host. Cuckoo catfish. Cuckoo wasp. Parasites can be generalists (uncommon) or specialists in regard to # of host species.. Abiotic Factors. Topography. Temperature. Water. Abiotic Factors. Soil Content. Sunlight. Communities and Populations. Communities . Assemblage of different populations that live together in a defined area.. Parasitism. A: Ecological niche and competition. B: Parasite niches. C: Transmission and host behaviour. D: Parasitic life cycles. E: . Immune response to parasites. F: Challenges in treatment and control. 1. Possible definition . 2. An example or two (think of the characteristics a parasitic relationship should have) . http://www.youtube.com/watch?v=. 4Mb0GOITRUU. . Community Ecology . Levels in Nature . Science. Challenge answer. Investigate and make note of other examples of commensalism in animals and plants and why they are considered commensal. . Tree frogs use plants as protection.. Plants that live on other plants and do not harm them.. Protozoa and . helminths. (animal parasites) are studied in medical . parasitology. .. Parasite may be classified as :. Ectoparasite. -. . They inhabit the surface of the body of the host without .