Question

according to endosymbiotic theory, how did eukaryotes acquire photosynthetic capabilities?
engulfing a fungal cell
engulfing a photosynthetic prokaryote
engulfing a heterotrophic cell

Explanation:

The endosymbiotic theory suggests that eukaryotic cells acquired certain organelles (like mitochondria and chloroplasts) by engulfing prokaryotic cells. Chloroplasts are responsible for photosynthesis. Fungal cells are eukaryotic and not photosynthetic. Heterotrophic cells cannot perform photosynthesis. Photosynthetic prokaryotes (like cyanobacteria) can carry out photosynthesis. When a eukaryotic cell engulfed a photosynthetic prokaryote (in a symbiotic relationship), over time, it led to the eukaryote having photosynthetic capabilities (as the prokaryote evolved into the chloroplast).

Answer:

engulfing a photosynthetic prokaryote