What eukaryotic lineage contains species that all lack functioning mitochondria?
In examining a multicellular protist, you notice that it uses pseudopods to engulf its food, that it reproduces asexually by mitosis, and that it has multiple nuclei. This data allows you to infer that the species belongs to what protist group?
a trait common in a single monophyletic group, but not generally found outside of that group
What is necessary in order for symbiosis to occur?
two organisms must live in regular physical contact with each other
Plankton is comprised of photosynthetic protists and bacteria. What is the primary importance of plankton to humans?
They are food for many marine organisms that humans eat.
What is one major trend in land plant evolution?
the trend toward a sporophyte-dominated life cycle