What situation below is best characterized as interference competition?
A. A barnacle living on the tail of a humpback whale.
B. Viruses that infect bird species.
C. Cattle and deer grazing on the same grasses.
D. Insects that use rabbit warrens for shelter.
E. A tiger that excludes other tigers from its territory.
E. A tiger that excludes other tigers from its territory.
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Molecules
A. are derived from the ionic bonding of two or more atoms. B. have the same physical properties as the atoms from which they were derived. C. are not important in biological processes. D. can form from the covalent bonding of two or more atoms. E. cannot have a charge.
Which of the following is true regarding diffusion?
a. The larger the solute, the faster diffusion will occur. b. The colder the temperature, the faster diffusion will occur. c. The fewer solute particles in a solution, the faster diffusion will occur. d. The less dense a solvent is, the faster diffusion will occur.
Archaeal flagella are superficially similar to bacterial flagella, although archaeal flagella are much thicker than bacterial flagella.
Answer the following statement true (T) or false (F)
In angiosperms, the megasporangium goes through several stages as it develops into an embryo sac. The sac protects the egg cell and several supporting cells, but it does not completely enclose it. What is the opening in the embryo sac that allows the pollen tube to enter called?
a. integument b. microspore c. micropyle d. exine