Exam 21: Protist Evolution and Diversity

The reason biologists believe that green algae and land plants,both members of the supergroup Archaeplastida,are related is because both of them possess chlorophyll a and b,as well as cell walls made of starch.

If a public health official was trying to reduce the potential for human exposure to a "red tide," which of the following actions would they take?

DNA sequencing suggests that among the green algae,the ________ are most closely related to land plants.

Which organisms are classified as archaeplastids? Describe their mode of nutrition.

Amoebic dysentery is transmitted by (through)

Slime molds were once classified as fungi.What characteristics of the slime molds distinguish them from fungi?

Which is NOT a feature found in protozoans?

Which of the following pairs of protists would be most closely related due to both of them possessing plastids?

Diatoms share a more recent common ancestor with dinoflagellates than with water molds.

Which definition would best describe the mode of nutrition of Euglena?

How are the archaeplastids similar to and different from the plants?

The most widely accepted formal classification of protists assigns them to

Which of the following protozoans is mismatched with the disease that it causes?

Each time a diatom reproduces sexually,the size of the daughter cells decreases until diatoms are about 30% of their original size.At this point,they begin to reproduce asexually.

Which feature has to be present in a protist in order to classify it as a photoautotroph?

The members of the supergroup Archaeplastida that have cell walls impregnated with calcium carbonate and help build coral reefs are the

Brown algae that live along the rocky shores of the north temperate zones are able to withstand pounding tides and drying because of their holdfasts and the water-retaining material in their cell walls.

Water molds are heterotrophic because they are parasitic on fish,plants,and insects.

Which description best supports the endosymbiotic theory of organelles?

This name of the filamentous algae pictured here,belonging to the supergroup Archaeplastida,is