Plants have been using light in this primal ... when single-celled organisms called protists engulfed photosynthesizing bacteria. Over time, through the transfer of genes aided by a parasite ...

Plastids are core components of photosynthesis in plants and algae. Scientists are currently debating the events leading to the appearance of plastids in eukaryotic cells. Where did plastids ...

Protists are a diverse, catchall group. Most are unicellular, but with features that disqualify them from grouping with other types of life like animals, plants, fungi, bacteria, and archaea.

Pathogens are disease-causing viruses, bacteria, fungi or protists, which can infect animals and plants. Humans have an immune system, which can defend them from pathogens. Treating, curing and ...

Plant disease - Edexcel Pathogens are disease-causing viruses, bacteria, fungi or protists. Some pathogens infect plants and others infect animals. Plants have physical and chemical defences ...