Which statement most closely expresses our present understanding?
A) The chloroplast is an ancestor of the cyanobacteria.
B) The cyanobacteria are descendents of the chloroplast.
C) The chloroplast arose from the incorporation of a cyanobacterial-like organism.
D) The chloroplast and the cyanobacteria are not closely (or specifically) related.
Answer: C
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Wolbachia are found only in
A. hot springs. B. plants. C. mammals. D. arthropods.
Which protist is responsible for late blight of potatoes, the cause of the Irish potato famine in the mid 19th century?
a. Phytophthora b. Myxomycota c. Macrocystis d. Physarum e. Giardia
Which of the following is a tenet of the Cell Theory?
a) All organisms are composed of one or more cells. b) The cell is the structural unit of life. c) Cells can arise only by division from a preexisting cell. d) Cells divide only by fission.
In a majority of land ecosystems, most energy in producers flows directly to ____.
A. decomposers B. other plants C. detritivores D. herbivores E. carnivores