Which event occurred first?
a. evolution of vascular plants
b. evolution of modern humans
c. oxygen accumulation in the Earth's atmosphere
d. evolution of prokaryotes
e. evolution of reptiles
ANSWER: d
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Plants deter herbivores by producing compounds that are not necessary for the metabolism of the plant. These compounds are manufactured purely to prevent being eaten
a. secondary compounds b. primary compounds c. resins d. tertiary compounds e. waxes
Mosses produce large amounts of pollen
Indicate whether the statement is true or false
Most cancer-causing animal viruses are RNA viruses called ________
A) classic viruses B) retroviruses C) DNA viruses D) neoviruses
The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT
A. protection against dehydration. B. anchoring cells to each other. C. cellular recognition and communication. D. transfer of genetic material between cells. E. strengthening the cell surface.