One of the most momentous events in the history of life involved endosymbiosis—a process by which one organism engulfed ...

Scientists found molecular evidence supporting the idea that chloroplasts originated as energy-generating organelles and only later evolved to support carbon assimilation in plant cells.

Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls ...

Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. At some point, a eukaryotic cell engulfed an aerobic prokaryote, which then formed ...

They have many chloroplasts in which photosynthesis occurs. They are found towards the tops of leaves to absorb maximum light. Describe the purpose and adaptations of xylem and phloem cells.