Multiple Choice
Which of the following Earth systems includes the process of photosynthesis?
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9. Photosynthesis
Introduction to Photosynthesis
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Which of the following statements is correct regarding autotrophs and heterotrophs?
A
Autotrophs rely exclusively on consuming other organisms for their energy needs.
B
Heterotrophs convert carbon dioxide and water directly into glucose without the need for sunlight.
C
Both autotrophs and heterotrophs can perform photosynthesis to produce glucose.
D
Autotrophs produce their own organic molecules using energy from sunlight or inorganic substances, while heterotrophs obtain organic molecules by consuming other organisms.
Verified step by step guidance1
Step 1: Understand the definitions of autotrophs and heterotrophs. Autotrophs are organisms that produce their own organic molecules using energy from sunlight (via photosynthesis) or inorganic substances (via chemosynthesis). Heterotrophs, on the other hand, obtain organic molecules by consuming other organisms.
Step 2: Analyze the first statement: 'Autotrophs rely exclusively on consuming other organisms for their energy needs.' This is incorrect because autotrophs do not consume other organisms; they produce their own energy through photosynthesis or chemosynthesis.
Step 3: Analyze the second statement: 'Heterotrophs convert carbon dioxide and water directly into glucose without the need for sunlight.' This is incorrect because heterotrophs cannot produce glucose from carbon dioxide and water; they rely on consuming organic molecules produced by autotrophs or other heterotrophs.
Step 4: Analyze the third statement: 'Both autotrophs and heterotrophs can perform photosynthesis to produce glucose.' This is incorrect because only autotrophs can perform photosynthesis; heterotrophs cannot.
Step 5: Confirm the correct statement: 'Autotrophs produce their own organic molecules using energy from sunlight or inorganic substances, while heterotrophs obtain organic molecules by consuming other organisms.' This accurately describes the distinction between autotrophs and heterotrophs.
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