BIOL 1543 Lecture Notes - Lecture 19: Chestnut Blight, Interspecific Competition, Ecological Niche

45 views6 pages

mauvecod513

25 Aug 2016

School

University of Arkansas

Department

Biology

Course

BIOL 1543

Professor

Dr.Roberts

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Interspecific competition occurs when populations of two different species compete for the same limited resource. Predation one species benefits while another is harmed. Herbivory one species benefits while another is harmed consumes plant parts or algae: caterpillars/leaves. Parasites/pathogens one species benefits while another is harmed host plants/animals are victimized by parasites or pathogens: heartworm/dogs. Competition both species are harmed: ex. Competition may occur when a shared resource is limited. Ecological niche the sum of an organism"s use of the biotic and abiotic resources in its environment: interspecific competition occurs when: Both populations need a resource that is in short supply. In general, competition lowers carrying capacity of competing populations because the resources used by one population are not available to the other population. Reef-building corals and photosynthetic dinoflagellates provide a good example of how mutualists benefit from their relationship: photosynthetic dinoflagellates. Gain a secure shelter that provides access to light.

Related Questions

16. Which of the following statements best describes a commensal symbiotic relationship between two species? Both species benefit. One species benefits and the other is unaffected. One species benefits and the other is harmed. Both species are harmed.

17. The fundamental niche of an organism is determined by ______ factors, while the realized niche is determined by ______ factors. biotic; abiotic abiotic; biotic biotic; biotic abiotic; abiotic

18. Competition between species can be reduced as a result of character displacement. This is because one of the species becomes extinct. the species will no longer compete for the same resource. the niche of at least one of the species is changed. Both B and C are correct.

19. When they winter in Central and South America, robins form flocks and feed on fruit. During the summer, they migrate to North America, where they feed on caterpillars, earthworms and other animals. These birds are best described as herbivores. omnivores. detrivores. carnivores.

20. For your final examination before you receive your degree from Penn State, you have been given a slide that contains an unknown tissue from a multi-cellular eukaryote. You have been asked to identify if that tissue is from an animal, a fungus, or a plant. As you stare through the microscope at the slide, you remember that you learned the major differences between these cells in Biology 11. You look for the presence of ______, found only in plant cells, and the absence of ______, never seen in animal cells. But, the cells that you are looking at have a cell wall and do not have chloroplasts. You confidently circle ______ on the answer sheet. chloroplasts; mitochondria; animal mitochondria; chloroplasts; animal chloroplasts; cell walls; fungus mitochondria; cell walls; fungus

BIOL 1543 Lecture Notes - Lecture 19: Chestnut Blight, Interspecific Competition, Ecological Niche

Document Summary

Get access

Related Documents

BIOL 1543 Lecture Notes - Lecture 16: Ecological Niche, Coevolution, Starfish

BIOL 1009 Chapter Notes - Chapter 54: Character Displacement, Niche Differentiation, Competitive Exclusion Principle

BSC 2011C Lecture Notes - Lecture 35: Niche Differentiation, Species Richness, Character Displacement

Related Questions