Alarm calling seems to be an example of ________, that is, it favors relatives.
A. aggression
B. demography
C. sociology
D. kin selection
Answer: D
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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.
A fat molecule has ____ fatty acids
a. 1 b. 2 c. 3 d. 4 e. 5
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.
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