Exam 21: The Diversity of Protists

When a red tide occurs, huge numbers of microscopic organisms are filtered out of coastal waters by oysters and clams. This sometimes causes the shellfish to become toxic to people who eat them. The organisms that create the red tide are classified as

Free- floating, photosynthetic, unicellular protists include

A parasitic protist that presents a major health problem to backpackers and hikers if they drink unfiltered stream or lake water is

Both Trichomonas and Giardia are parasitic protists in the group called

Secondary endosymbiosis can occur when a

Which cell structure is missing in Trichomonas and Giardia?

While exploring a newly exposed shoreline, you find a new protist. It appears to be multicellular, it uses carbon dioxide from the air to carry out photosynthesis, and its chloroplasts closely resemble those of ferns and grasses. This organism is most likely to belong to the group

Which of the following is the parasite apicomplexans that causes malaria if it infects a human host?

The organisms in the photo belong to the group

A _ forms when an acellular slime mold is exposed to dry conditions or starvation.

The way that Giardia normally infects a host is when the host ingests _ in contaminated water.

How do kinetoplastids differ from excavates?

Which group comprises a significant portion of phytoplankton and therefore is important to marine food webs?

The coral that make up a tropical coral reef can survive only in clear, well- lit waters because of the symbiotic, photosynthetic that live within the tissues of the coral.

Which protist group includes organisms that can reach heights of hundreds of feet and grow more than half a foot per day?

Which protozoan group consists entirely of parasitic forms?

The oomycete that nearly destroyed the French wine industry in the late 1870s was

Both Didinium and Paramecium are protists in the group called

Alveolates are characterized by pseudopods and silica shells.

A pseudoplasmodium is a(n)