Which group includes organisms that can photosynthesize and are bacteria?

Which group includes organisms that can photosynthesize and are bacteria?

• A. Cyanobacteria
• B. Fungi
• C. Animals
• D. Protozoa

Answer: (A)

Photosynthesis in some bacteria is performed by cyanobacteria, which are prokaryotes capable of oxygenic photosynthesis like plants. They contain chlorophyll a and accessory pigments, and they use photosystems I and II to convert light energy into chemical energy, releasing oxygen in the process. This combination—being bacteria and being photosynthetic—fits the description perfectly. Fungi, animals, and protozoa are all eukaryotic and mostly heterotrophic, meaning they rely on consuming organic matter rather than producing their own energy from light. While protozoa are diverse, they are not bacteria and typically do not carry out photosynthesis.

Photosynthesis in some bacteria is performed by cyanobacteria, which are prokaryotes capable of oxygenic photosynthesis like plants. They contain chlorophyll a and accessory pigments, and they use photosystems I and II to convert light energy into chemical energy, releasing oxygen in the process. This combination—being bacteria and being photosynthetic—fits the description perfectly.

Fungi, animals, and protozoa are all eukaryotic and mostly heterotrophic, meaning they rely on consuming organic matter rather than producing their own energy from light. While protozoa are diverse, they are not bacteria and typically do not carry out photosynthesis.