Pioneer plant species are usually characterized

by
a. small size.
b. high dispersal rates.
c. slow maturation.
d. high dispersal rates and high numbers of
offspring
e. small size, efficient dispersal mechanisms,
and slow maturation.


D

Biology & Microbiology

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The process by which water is "pulled" up through the xylem columns of plants as it evaporates out of the leaves is called  

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Half a woman's somatic cells express her paternal X chromosome and half express her maternal X chromosome

Indicate whether the statement is true or false

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If we think of the DNA double helix as a twisted ladder, what makes up the rungs or steps of the ladder?

A. phosphate groups and bases B. alternating phosphate groups and sugars C. phosphate groups only D. purines and pyrimidines E. sugars only

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What evidence supports the theory of endosymbiosis for the development of cells with mitochondria and chloroplasts? (Select all that apply.)

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