Biologists have discovered the kingdom Protista to be paraphyletic. Which of the following statements is true, and consistent with this conclusion?
A) Various combinations of prokaryotic ancestors gave rise to different lineages of protists.
B) Animals, plants, and fungi arose from different protistan ancestors.
C) Multicellularity has evolved only once among the protists.
D) Chloroplasts among various protists are similar to those found in prokaryotes.
E) The protists arose from a common ancestor that was a parabasalid.
Ans: A) Various combinations of prokaryotic ancestors gave rise to different lineages of protists.
You might also like to view...
Which of the following processes generates the greatest amount of energy?
A. Fermentation B. Aerobic respiration C. The Entner-Duodoroff pathway D. Glycolysis E. Fermentation AND the Entner-Duodoroff pathway
Using a plant for food would be an example of an ecosystem
a. good. b. process. c. service. d. all of these
A characteristic of all cancers is that ____
a. the cells divide continuously b. they have a benign form and a deadly form c. several mutations in several different genes are required in order for cancer to develop d. they are always due to a chromosome disjunction mutation e. the rapid proliferation of cells is required
The process of producing food from inorganic compounds using high energy compounds as a source of energy is called:
a. photosynthesis. b. chemosynthesis. c. heterotrophy. d. grazing. e. solar irradiation.