In an introduction to photosynthesis, which type of organism performs photosynthesis?

• A. Viruses
• B. Autotrophs (e.g., plants, algae, and cyanobacteria)
• C. Heterotrophs (e.g., animals and fungi)
• D. Decomposers only (e.g., fungi only)

Answer: (B)

Verified step by step guidance

1. Understand the definition of photosynthesis: it is the process by which certain organisms convert light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.
2. Identify the types of organisms based on their nutrition: autotrophs produce their own food through photosynthesis, while heterotrophs obtain food by consuming other organisms.
3. Recognize that viruses are not living organisms and do not perform photosynthesis or any metabolic processes.
4. Recall that decomposers, such as fungi, break down dead organic material but do not perform photosynthesis.
5. Conclude that autotrophs, including plants, algae, and cyanobacteria, are the organisms that perform photosynthesis.