Basic Ecological Concepts: Ecosystem Components
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Questions and Answers

An ecosystem is a functional unit comprising all the organisms in a particular place interacting with one another and with their physical environment and interconnected by an ongoing flow of energy and a cycling of _______.

materials

Trophic structure is the way that energy and nutrients are transferred through an ecosystem. It is a way of organizing organisms into different levels based on their feeding _______.

relationships

Primary producers are organisms that can make their own food from sunlight, such as plants and _______.

algae

Photosynthetic autotrophs contain the green pigment chlorophyll in their organelles called chloroplasts which are able to trap the energy from the sun to fix carbon dioxide into carbon _______.

<p>compounds</p> Signup and view all the answers

Chemosynthetic autotrophs oxidize inorganic compounds to obtain their energy and form carbon _______.

<p>compounds</p> Signup and view all the answers

Primary consumers are organisms that eat the primary producers, such as _______.

<p>herbivores</p> Signup and view all the answers

Trophic structure is the way that _______ and nutrients are transferred through an ecosystem.

<p>energy</p> Signup and view all the answers

Primary producers can make their own food from _______.

<p>sunlight</p> Signup and view all the answers

Primary consumers are also called _______.

<p>heterotrophs</p> Signup and view all the answers

Decomposers play a crucial role in breaking down organic matter and recycling _______ in the ecosystem.

<p>nutrients</p> Signup and view all the answers

Secondary consumers primarily feed on _______.

<p>primary consumers</p> Signup and view all the answers

Trophic structure organizes organisms into different levels based on their feeding _______.

<p>relationships</p> Signup and view all the answers

Chemosynthetic autotrophs obtain their energy by oxidizing _______ compounds.

<p>inorganic</p> Signup and view all the answers

Heterotrophs must obtain their food from other _______.

<p>organisms</p> Signup and view all the answers

Photosynthetic autotrophs contain chlorophyll in their chloroplasts to trap energy from the _______.

<p>sun</p> Signup and view all the answers

Trophic levels are a way of categorizing organisms based on their position in the _______ structure.

<p>food chain</p> Signup and view all the answers

Study Notes

  • An ecosystem is a functional unit of organisms and their physical environment, connected by energy and material cycles
  • Trophic structure is how energy and nutrients move through an ecosystem, organizing organisms into different feeding levels
  • Primary Producers: autotrophs that make their own food through photosynthesis (using sunlight) or chemosynthesis (using inorganic compounds), include plants and algae
  • Primary Consumers: heterotrophs that feed on primary producers, such as herbivores
  • Trophic levels continue with secondary, tertiary consumers, and decomposers, each feeding on the previous level.

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Description

Explore the key components of ecosystems including trophic structure, productivity, energy flow, and levels of organization. Understand how organisms interact with each other and their physical environment through energy flow and material cycling.

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