Phytochrome is converted from the inactive to
the active form by being exposed to light of
what color?
a. far red
b. red
c. yellow
d. blue
e. none of these
B
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Before ARF transcription factors can trigger auxin-induced gene expression, what must happen?
A. Auxin binds to ubiquitin, a degradation tag. B. Auxin degrades Aux/IAA proteins which repress ARF transcription factors. C. Auxin binds to TIR1, an auxin receptor. D. Auxin must bind to the ARF transcription factor. E. Ubiquitin must destroy TIR1 to release Aux/IAA proteins.
Plants that rely on ants to disperse their seeds have an ant-attracting food body on the seed coat referred to as a(n) ________
Fill in the blank(s) with correct word
A botanist describes a particular plant as a perennial. Which best describes this plant to a nonbotanist?
A. It lives for many growing seasons. B. It lives only one growing season. C. It has a lot of showy flowers. D. It lives for two growing seasons.
At the end of _____ and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids.
A) metaphase II B) telophase I C) telophase D) telophase II E) interphase