The “imperfect fungi” are grouped together because they:

How did cyanobacteria alter Earth’s early atmosphere?

Phytophthora infestans, which caused the Irish potato famine, belongs to:

Ergot fungus infects:

Purple sulfur bacteria use which compound as a hydrogen donor in photosynthesis?

Protists show which of the following nutritional types?

Green, red, and brown algae may have originated by separate endosymbiotic associations of chloroplasts with eukaryotic cells. Evidence for this includes

The green algae store their food as:

The unicellular green alga with two flagella and a red eyespot is:

The moss “leaf” differs from vascular plant leaves because it: