One reason auxins are called the "master plant hormones" is because they mostly work apart from other hormones.
Answer the following statement true (T) or false (F)
False
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Which of the following sensory receptors is correctly paired with its category?
A) hair cell â€" mechanoreceptor B) muscle spindle â€" electromagnetic receptor C) taste receptor â€" mechanoreceptor D) rod â€" chemoreceptor E) olfactory receptor â€" electromagnetic receptor
The primary habitat for Vibrio spp. is:
a. freshwater. b. the upper respiratory tract of various mammals. c. brackish or marine water. d. the soil and water environment.
In some flowers, a purple pigment is synthesized from a red precursor pigment. In the absence of all pigment, flowers are white. A pure-breeding plant with red flowers was crossed to a pure-breeding plant with white flowers. All of the F1 plants had white flowers. The F1 plants were crossed to each other, and the F2 consisted of 165 plants: 123 with white flowers, 32 with purple flowers, and 11 with red flowers. How do these results suggest that flower color is determined?
A) One gene with two alleles exists and heterozygotes have a different phenotype than either homozygote. B) The dominant allele of one gene masks the effect of a second gene. C) The recessive allele of one gene masks the effect of a second gene. D) A dominant allele of two genes is necessary for purple flowers. E) A dominant allele of either of two genes is sufficient for purple flowers.
Although Watson and Crick are credited with the discovery of the structure of DNA, they based this
discovery on the bench work of many other scientists of the time. Name at least three different pieces of knowledge that Watson and Crick used in their discovery that was based on work from someone else.
What will be an ideal response?