Autotrophs in Ecosystems

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Questions and Answers

What are autotrophs in an ecosystem considered to be?

  • Consumers
  • Producers (correct)
  • Decomposers
  • Heterotrophs

What is the primary source of energy for autotrophs?

  • Chemical energy
  • Heat
  • Sunlight (correct)
  • Other organisms

Which of the following is an example of an inorganic molecule used by autotrophs?

  • Glucose
  • Protein
  • Fat
  • Carbon dioxide (correct)

What characteristic distinguishes autotrophs from heterotrophs?

<p>Ability to create organic molecules from inorganic molecules (C)</p> Signup and view all the answers

Which of the following is NOT a key characteristic of autotrophs?

<p>Consume other organisms for energy (A)</p> Signup and view all the answers

Flashcards

Autotrophs

Organisms that produce their own food from inorganic substances without consuming other organisms.

Producers of the biosphere

Organisms that create organic molecules, essential for life, from inorganic materials like CO2.

Photoautotrophs

Autotrophs that use sunlight to convert carbon dioxide and water into organic molecules.

Organic molecules

Complex molecules containing carbon that are produced by autotrophs from inorganic compounds.

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Process of photosynthesis

The method by which photoautotrophs convert light energy into chemical energy stored in organic molecules.

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Study Notes

Autotrophs

  • Autotrophs are self-sustaining organisms, meaning they don't rely on consuming other organisms for sustenance.
  • They are considered the producers in ecosystems, creating organic molecules from inorganic sources like carbon dioxide.
  • Most plants are photoautotrophs, utilizing sunlight's energy to synthesize organic compounds from water and carbon dioxide.

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