SCSC 105 Exam 2 Questions With Complete Solutions

Define Ecology correct answer: -Science dealing with the mutual relationships among biological organisms. What are the components of an ecosystem? correct answer: -Food chains -Nutrient Cycles -Plant Succession -Competitive Exclusion -Diversity What are agroecosystems, and how do they differ from ecosystems? correct answer: -Ecosystems modified to produce food, fiber and shelter -Examination of natural ecosystems to determine more sustainable approaches Describe the differences and/or similarities of nutrient cycling in ecosystems compared to agroecosystems. correct answer: Ecosystems -Nutrient cycles are in balance -Nutrients not lost unless cycle is disrupted Agroecosystems -Cycles are altered What is a soil? correct answer: -Medium for the production and growth of plants and crops. What are some of the important functions of soil? correct answer: -Anchorage for plants -Water, nutrients for plant uptake -Habitat for soil organisms Identify 5 soil forming factors correct answer: 1. Parent material 2. Climate 3. Biological Factors 4.Topography 5. Time What are the different functions of organic matter in soil? correct answer: 1. Sequestrations of nutrients