Exam 20: The Origin and Diversification of Eukaryotes

Some dinoflagellates live endosymbiotically with corals.When they die or are expelled by the corals-a phenomenon called "coral bleaching"- the corals can be damaged or destroyed because the dinoflagellates

Which photosynthetic protist performs approximately one-fifth of the photosynthetic carbon fixation on the planet (the equivalent of the entire rainforest)?

Which group has no photosynthetic members?

Which disease is not caused by trypanosomes?

All eukaryotes that are not plants,fungi,or animals have traditionally been called _______.

Apicomplexans

The _______ are an exclusively parasitic protist group with elaborate lifecycles;for example,Toxoplasma alternates between rats and cats as hosts.

Ancient marine protists are responsible for the existence of

Which statement about the micronucleus and macronucleus is false?

Which group includes the dinoflagellates?

Some amoebozoans are composed of coenocytes,which means that

Which statement about the process of conjugation in paramecia is true?

Microbial eukaryotes are ecologically and evolutionarily important for many reasons.Which statement about this group is false?

The photosynthetic euglenids obtained their chloroplasts,which are surrounded by three membranes,through

The red tides that can kill tons of fish are caused by toxic species of _______.

Microbial eukaryotes with flagella

The ability of protists to increase the surface area for gas and nutrient exchange is conferred by

What feature of eukaryotes makes endosymbiosis possible?

You are looking at a plankton sample and find a single-celled organism with an external shell and thin,threadlike pseudopod structures extending through it.This organism is most likely a

Some algae demonstrate the phenomenon of alternation of generations,by which a multicellular,diploid,spore-producing organism gives rise to a multicellular,haploid,gamete-producing organism.Which statement about alternation of generations is false?