Biology Exploring Study Set 1

Biology

Quiz 37 :

Plant Signals and Responses to the Environment

Quiz 37 :

Plant Signals and Responses to the Environment

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What did Darwin's experiments on phototropism illustrate?
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B

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Which plant hormones are primarily responsible for promoting the formation of lateral roots?
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C

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An agar block filled with auxin is placed on top of a shoot that has had the shoot tip removed. The agar block is placed so that it covers only one side of the top of the shoot. Which of the following should occur?
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B

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Which hormone's reduction in its amount causes a bush to become more bushy (have more lateral growth) after trimming a shrub?
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Which type of plant hormone is primarily responsible for the bending of a plant shoot toward light?
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What is the most widely used herbicide in the world, 2,4-D, a synthetic form of?
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Which type of plant hormone is primarily responsible for inhibiting growth of lateral meristems on shoots and restricting the formation of branches?
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What are the usual concentrations of plant hormones that are effective, and what kind of effects do they have on different plant tissues?
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Which of the following is NOT known to be influenced by plant hormones?
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Work by Charles Darwin and Francis Darwin was instrumental in the discovery of which plant hormones?
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Which plant hormones would be used by commercial grape growers to get larger grapes by lengthening the stem on which fruits develop?
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Where is the auxin receptor ABP1 located in plant cells?
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Which plant hormones are primarily responsible for helping break the dormancy of seeds and buds?
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Which of the following statements best describes the movement of IAA in a shoot tip?
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Where is the growth-promoting substance that promotes stem elongation and bending toward light primarily produced?
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Which plant hormone is primarily responsible for inhibiting leaf abscission?
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Which of the following is the most important natural auxin?
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Imagine that you want all of the orange trees in your orchard to uniformly flower and set fruit. Which type of plant hormone should you spray on your plants?
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What are sunflowers well known for?
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Which of the following should prevent a grass seedling shoot from bending toward light?
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