Q. If you place a plant in a box with a source of red light coming in from the left hand side:
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The plant shoot will bend to the right |
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The plant shoot will bend to the left |
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The plant shoot will not bend |
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The direction of bending will depend on stem water potential |
Q. Which of the following processes is not directly involved in auxin-mediated cell expansion?
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Acidification of cell walls |
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Production of cellulose microfibrils |
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Cellular nitrate (NO3-) accumulation |
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Decreased cellular solute potential |
Q. Which of the following sensory signals is used to control the timing of plant germination?
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The PHOT1 receptor |
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Auxin levels in the roots |
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Auxin levels in the seeds |
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The Pr / Pfr phytochrome ratio |
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Cytokinin levels in the seeds |
Q. During the gravitropic response:
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Amyloplasts are distributed throughout root cells |
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Auxin acts to inhibit cell growth |
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Cytokinin induces the cell elongation |
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Abscicic acid accumulates at the ‘bottom’ of cells |
Q. If you wanted to delay barley seed germination you would:
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Treat seeds with gibberellins |
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Increase seed expression levels of alpha-amylase |
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Treat seeds with ABA (abscicic acid) |
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Treat seeds with auxin |
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Treat seeds with salicylic acid |
Q. If you wanted to decrease transpiration rates
in a plant you would:
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Expose them to blue light |
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Expose them to red light |
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Treat them with auxin |
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Treat them with ABA (abscicic acid) |
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Treat them with cytokinins |
Q. If you wanted to extend the life span of a tree leaf, you would:
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Increase the ratio of ethylene to cytokinins in the leaf tissue |
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Decrease the ratio of ethylene to cytokinins in the leaf tissue |
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Decrease the amount of auxin in the leaf tissue |
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Increase the amount of brassinosteroids in the leaf tissue |
Q. Which of the following hormone is most directly involved in plant pathogen responses:
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Auxin |
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Abscicic acid |
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Ethylene |
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Gibberellins |
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Systemin |
1) plant shoot will bend to its right
2)cellular nitrate accumulation
3)auxin levels in roots
4)auxin acts to inhibit cell growth
5)treat seeds with ABA
6)treat them with ABA
7)decrease the ratio of ethylene to cytokinines in leaf
8) ethylene
Q. If you place a plant in a box with a source of red light coming...
1.)When plants bend toward the light in response to auxin, the signal response includes… (a) only an intracellular response (b) only an intercellular response (c) both an intracellular and an intercellular response (d) magic 2.)The production of auxin is mediated by which wavelength of light? (a) blue (b) green (c) red (d) far-red 3.)Many plants are categorized as “short day” or “long day” plants. The environmental factor that determines the time of year when these plants flower is (a) a...