University:
Eastern Kentucky University
Course:
BIO 316 | Ecology
Academic year:

2023
Views:

23

Pages:

3
Author:

ui4s3l4md25

Principles of Ecology Study Guide B Answer Key SECTION 2. BIOTIC AND ABIOTIC FACTORS 1. 2. 3. 4. 5. 6. 7. 8. living, nonliving Biotic, plants, animals Abiotic, moisture, temperature, wind Biodiversity is the variety of organisms found within a specific area. keystone species When they build dams, beavers change free-flowing stream habitats into ponds, wetlands, and meadows. This change provides habitat for a number of different species, including fish, birds, and insects, increasing the area’s biodiversity. Abiotic factors are nonliving things, biotic factors are living things a keystone species is a species that holds together a healthy ecosystem; its presence has a large impact on the rest of the ecosystem Be Creative: drawings will vary; biotic factors may include plants and animals; biotic factors may include soil, Sun, precipitation Principles of Ecology Study Guide B Name ______________________________ Class ___________________ Date __________________ Section 2: Biotic and Abiotic Factors Study Guide B KEY CONCEPT Every ecosystem includes both living and nonliving factors. VOCABULARY biotic biodiversity abiotic keystone species MAIN IDEA: An ecosystem includes both biotic and abiotic factors. Use a word from the box below to complete the following sentences. abiotic animals biotic living moisture nonliving plants temperature wind 1. All ecosystems are made up of _____________________ and _____________________ components. 2. ____________________ factors are living things, such as ____________________ or ____________________. 3. ____________________ factors are nonliving things, such as ___________________, ___________________, or ___________________. MAIN IDEA: Changing one factor in an ecosystem can affect many other factors. 4. Describe what biodiversity means in your own words. _______________________________________________________________ 5. What is the term for an organism that has an unusually large effect on its ecosystem? _______________________________________________________________ 1 Study Guide B Principles of Ecology Section 2: Biotic and Abiotic Factors Name ______________________________ Class ___________________ Date __________________ Study Guide B continued 6. List a few reasons why a beaver is an example of a keystone species. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ Vocabulary Check 7. What is the difference between a biotic and an abiotic factor? _______________________________________________________________ _______________________________________________________________ 8. Take another look at the Visual Vocab in Section 2. In architecture, a keystone is the stone at the center of an arch that holds the arch together. How does this definition relate to a keystone species? _______________________________________________________________ _______________________________________________________________ Be Creative In the box below, sketch a simple ecosystem and label the abiotic and biotic factors. 2 Study Guide B Principles of Ecology Section 2: Biotic and Abiotic Factors