When behavioral biologists look at the ultimate evolutionary benefit of animal communication, they are primarily
focusing on the effects of the communication on the individual's ability to ____.
a. secure food resources
b. intimidate other animals
c. form alliances with other animals
d. produce surviving offspring
e. maintain a favorable position in the dominance hierarchy
ANSWER: d
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Explanations for mass extinction include all of the following except
1.collisions between the Earth and other bodies in the solar system. 2.continental movements. 3.adaptive radiation of new predator species in many lineages. 4.alterations in sea level. 5.habitat destruction.
Comparing reactants to end products in the following chemical reaction, which end product will gain energy? Adenosine-tri-phosphate + sugar ® adenosine-di-phosphate + sugar-mono-phosphate
A. sugar-mono-phosphate B. adenosine-di-phosphate C. adenosine-tri-phosphate D. None of these choices is correct.
Which group of photosynthetic, mostly marine protists was named for the motion created by their two whip-like flagella?
A) Dinoflagellates B) Apicomplexans C) Euglenids D) Cercozoans E) Amoebas
During meiosis II
A) sister chromatids exchange parts. B) sister chromatids of each chromosome are separated from each other. C) homologous chromosomes synapse. D) cytokinesis results in the formation of a total of two cells. E) homologous chromosomes separate.