Biology Sections 2.1, 2.2, and 3.1 Flashcards

Biotic factors are living factors in an ecosystem, while abiotic factors are nonliving factors in an ecosystem.

1. Organism 2. Population 3. Community 4. Ecosystem 5. Biosphere 6. Biome

An organism's niche is its way of life, while a habitat is where an organism lives.

<p>The sun's energy is used by autotrophs, then converted through various organisms until reaching detritivores, which release nutrients back into the environment.</p> Signup and view all the answers

<p>Food webs are models that represent many interconnected food chains and pathways of energy flow among organisms.</p> Signup and view all the answers

<p>Any abiotic or biotic factor that affects the numbers, reproduction, or distribution of organisms.</p> Signup and view all the answers

<p>Sunlight, temperature, climate, plant and animal species.</p> Signup and view all the answers

<p>Primary succession occurs where no soil is present and is created by pioneer species, while secondary succession occurs in areas where soil remains after a community has been removed.</p> Signup and view all the answers

<p>The upper and lower limits in which an organism can survive.</p> Signup and view all the answers

<p>Occurs when one community replaces another because of changing limiting factors.</p> Signup and view all the answers

<p>Has a bacteria in its roots that takes nitrogen from the air and puts it in the soil.</p> Signup and view all the answers

<p>Certain cones are filled with wax that don't open unless there's a fire; then seeds are released.</p> Signup and view all the answers

<p>Organisms that make energy by using sunlight.</p> Signup and view all the answers

<p>Organisms that use food from other organisms in the form of fats, carbohydrates, and proteins to make energy.</p> Signup and view all the answers

<p>Organisms that eat only plants.</p> Signup and view all the answers

<p>Organisms that eat both plants and animals.</p> Signup and view all the answers

<p>Organisms that eat only meat.</p> Signup and view all the answers

<p>Organisms that feed on fragments of dead matter and return nutrients to the ecosystem.</p> Signup and view all the answers

<p>Each step in a food chain or food web is called a trophic level, with autotrophs making up the first step.</p> Signup and view all the answers

<p>A model that shows how each living thing gets food and how nutrients and energy are passed from organism to organism.</p> Signup and view all the answers

<p>A model representing the many interconnected food chains.</p> Signup and view all the answers

<p>The top of the ecological pyramid; includes fish, big birds, mammals, etc.</p> Signup and view all the answers

<p>The third tier of the ecological pyramid; includes frogs and snakes.</p> Signup and view all the answers

<p>The second tier of the ecological pyramid; includes insects and mice.</p> Signup and view all the answers

<p>Organisms at the bottom tier of the ecological pyramid; primarily plants.</p> Signup and view all the answers

<p>A model used to show trophic levels in ecosystems.</p> Signup and view all the answers

<p>All living organisms in a certain area together with their physical environment.</p> Signup and view all the answers

<p>An individual living thing.</p> Signup and view all the answers

<p>A group of organisms that can produce fertile offspring and share a similar genetic makeup.</p> Signup and view all the answers

<p>A group of individuals of the same species living in a particular place.</p> Signup and view all the answers

<p>A group of interacting populations.</p> Signup and view all the answers

<p>An organism's way of life and its relationship with its environment.</p> Signup and view all the answers

<p>The actual place where an organism lives.</p> Signup and view all the answers

<p>An organism that preys on other organisms.</p> Signup and view all the answers