Exam 20: The Diversity of Protists

What characteristic do the organisms in the photos share?

The foundation of a marine food chain is:

Which group has silica shells similar to those of diatoms?

A protist that lives inside a host organism and absorbs nutrients from that living host is:

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

Free-floating, photosynthetic, unicellular protists include:

Which of the following groups is eukaryotic?

Which of the following characteristics distinguishes red algae from diatoms and dinoflagellates?

The giant kelp found along the Pacific coast is an example of:

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 group is commonly referred to as the "seaweeds"?

Oomycetes are primarily ________ that destroy crops such as grapes and potatoes.

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:

Which organisms are responsible for the majority of photosynthesis?

A pseudoplasmodium is a(n):

A man is brought to the hospital suffering from nausea, vomiting, and severe stomach cramps. He had recently returned from a hiking trip in northern Minnesota. A sample taken from the man shows a single-celled flagellate organism that lacks mitochondria but has two nuclei. This organism is a(n):

Paralytic shellfish poisoning is caused by the group of protists known as ________.

The short, hair-like structures that propel Paramecium through the water are called:

What would life on Earth be like today if eukaryotic protists had not evolved?

Excavates lack ________.