Gravity-sensing mechanisms of many organisms are based on ____.

A. spicules
B. statoliths
C. uric acid crystals
D. sclereids
E. nematocysts


Answer: B

Biology & Microbiology

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A flower displaying which characteristic is unlikely to encourage pollination by bees?

a. open during daylight b. tubular shape c. bright red petals d. strong aroma

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Non-native species can have important effects on biological communities by ________

A) preying upon native species only B) competing with native species for resources only C) reducing biodiversity only D) All of these are effects that non-native species can have on biological communities.

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Which of the following refers to the area of Earth's surface that is required to sustainably support a particular level of development and consumption?

A. Demographic transition model B. Carrying capacity C. Ecological footprint D. Biosphere E. Ecological cohort

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Natural selection for a certain phenotype will affect the

A. genotype of a population. B. allele frequency of a population. C. allele frequency of an individual. D. genotype of an individual.

Biology & Microbiology