In the accompanying figure, which of the following represents a multicellular, haploid reproductive stage?

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


ANSWER: d

Biology & Microbiology

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Sugars leave the source region and immediately enter into a ____, followed by direct movement into the ____

a. pit, perforation plate b. companion cell; sieve element c. pit, vessel element d. plasmodesmata, sink e. phloem tube, companion cell

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Phagocytosis is a form of ____

a. diffusion b. endocytosis c. exocytosis d. osmosis e. facilitated diffusion

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If the birthrate is 22 per 1000 per year and the death rate is 8 per 1000 per year, what is the population growth rate?

A. 22% B. 2.2% C. 0.8% D. 1.4% E. 14%

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