What is the function of phloem?
a. it helps the plant prevent desiccation
b. it carries water and minerals
c. it carries photosynthetic sugars
d. it allows for gas exchange
e. it does more than one of these
C
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Ginkgo trees are known to lose their leaves at a certain time each year throughout the United States. Based on this information, Ginkgo trees in China must behave the same way. These statements are an example of:
A. inductive reasoning B. a theory C. an experiment D. deductive reasoning
Most plant cells differ from animal cells in that they
A. possess nucleoli. B. lack nucleoli. C. contain mitochondria. D. lack centrioles.
All of the following are examples of phenotypic traits except
A. morphology. B. physiology. C. sexual behavior. D. mutations. E. response to stimuli
If the residuals of a regression model, Yi = B + MXi + Ei, are such that their variances vary across all values of X, then they are said to be:
A. heteroscedastic. B. endogenous. C. homoscedastic. D. exogenous.