Alarm calling seems to be an example of ________, that is, it favors relatives.

A. aggression
B. demography
C. sociology
D. kin selection


Answer: D

Biology & Microbiology

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Angiosperm tracheids move water more rapidly from roots to shoots than gymnosperm tracheids

Indicate whether the statement is true or false.

Biology & Microbiology

A fat molecule has ____ fatty acids

a. 1 b. 2 c. 3 d. 4 e. 5

Biology & Microbiology

Which of the following statements about the intermediate disturbance hypothesis are true? Check all that apply.  

_____  The intermediate disturbance hypothesis predicts that most communities eventually reach an end-state or climax community. _____  Intermediate disturbance should lead to increases in species richness. _____  Disturbances tend to lead to the dominance of K-selected species. _____  An example of intermediate disturbance would be a tree fall in a mature rain forest. _____  Intermediate disturbance should lead to all successional stages being present in the community at the same time.

Biology & Microbiology

Which of the following best demonstrates the relationships between the different developmental processes?

a. Cell differentiation is the major driver of the other developmental processes b. Cell proliferation, on its own, can result in substantial changes to embryo shape c. In the absence of induction, most of the other developmental processes would be severely impaired or not occur d. Programmed cell death usually only occurs when needed to eliminate defective cells in an embryo

Biology & Microbiology