Which of the following diagrams is most commonly used to illustrate the flow of energy through an ecosystem in introductory biology?

• A. Karyotype
• B. Food web
• C. Punnett square
• D. Cell cycle diagram

Answer: (B)

Verified step by step guidance

1. Understand the question: The problem asks which diagram is most commonly used to illustrate the flow of energy through an ecosystem in introductory biology. This requires knowledge of biological concepts and the purpose of different diagrams.
2. Clarify the options: Review the provided diagrams and their functions. A karyotype is used to display chromosomes, a Punnett square predicts genetic inheritance, a cell cycle diagram shows stages of cell division, and a food web illustrates energy flow and interactions between organisms in an ecosystem.
3. Focus on the concept of energy flow: Energy flow in an ecosystem refers to how energy is transferred from one organism to another, typically starting with producers (plants) and moving through consumers (herbivores, carnivores, etc.). This is best represented by a food web.
4. Explain why the food web is correct: A food web is a network of interconnected food chains that shows how energy and nutrients move through an ecosystem. It includes producers, primary consumers, secondary consumers, and decomposers, making it ideal for illustrating energy flow.
5. Conclude the reasoning: Based on the definitions and purposes of the diagrams, the food web is the most appropriate choice for illustrating energy flow in an ecosystem in introductory biology.