Study Guide - Exam 2

Study Guide - Exam 2 - 1 2 3 4 5 6 7 8 9 10 11 12 13...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 5 1. Where is Lake Victoria; what is the issue that your book/PP examined relating to Lake Victoria; why is there ‘ecological imbalance’ there? (as in many, many places) In Africa, the introduction of Nile Perch into the lake which ate all the Cichlids, also the introduction of Hyacinth. 2. What is ‘ecology’? What does it mean? What are the goals of an ecologist? Ecology is the study of the interactions among organisms and between organisms and their abiotic environment. “The study of ones house”. Ecologists are most interested in the levels of biological organization including or above the level of the individual organism, the ultimate goal of ecosystem ecologists is to understand how ecosystems function. 3. What are the levels of ‘ecological organization’? Which is largest, smallest, the rest, and how is each described? Orgamism(one animal, the smallest), population (individuals of the same specie), community (populations are organized into communities), ecosystem (includes all the biotic interactions of a community), landscape (a region that includes several interacting ecosystems), biosphere (the layer of earth containing all living organisms, the larget) 4. What are the levels in ecosystem composition (producers, consumers, decomposers), and what are their roles in the ecosystem? Examples? Producers- manufacture large organic molecules from simple inorganic substances, generally carbon dioxide and water usually using the energy of sunlight. (Plants). Consumers- they consume other organisms as a source of food energy and bodybuilding materials. (lion,spiders,deer, grasshoppers). Decomposers- organisms that break down dead organisms and waste products. (Bacteria,fungi). 5. How do the ‘food chain’ and the ‘food web’ differ? Which is more realistic? Food Chain- a chain in which food passes from one organism to the next in a sequence. Food Web- a complex interconnected food chains in an ecosystem, is a more realistic model of flow of energy and materials through ecosystems. 6. Ecological niches – how do explain them? What is ‘resource partitioning’, ‘overlap’, and ‘competition’? Can you provide examples from your text? Ecological Niche- the totality of an organism’s adaptations, its use of resources, and the lifestyle to which it is fitted. Resource Partitioning- is the reduction in competition for environmental resources such as food among coexisting species as a result of each species’ niche differing from the others in one or more ways. (Warblers) Overlap- when you overlap/share. Competition- The interaction among organisms that vie for the same resources in an ecosystem (such as food or living space). (Plants compete for light). 7.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

Study Guide - Exam 2 - 1 2 3 4 5 6 7 8 9 10 11 12 13...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online