Which group of organisms is primarily responsible for performing photosynthesis?

• A. Plants, algae, and cyanobacteria
• B. Archaea and protozoa
• C. Viruses and prions
• D. Animals and fungi

Answer: (A)

Verified step by step guidance

1. Understand the process of photosynthesis: it is the biological process by which light energy is converted into chemical energy, producing glucose and oxygen from carbon dioxide and water.
2. Identify the types of organisms capable of photosynthesis: these organisms contain pigments like chlorophyll that capture light energy.
3. Recognize that plants and algae are eukaryotic organisms with chloroplasts where photosynthesis occurs.
4. Know that cyanobacteria are prokaryotic organisms capable of photosynthesis due to their photosynthetic pigments, despite lacking chloroplasts.
5. Exclude groups like archaea, protozoa, viruses, prions, animals, and fungi, as they do not perform photosynthesis.