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Eleventh Grade (Grade 11) Botany Questions

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Grade 11 Botany
Alternation of generations is defined as the switching back and forth between the production of                                      .
  1. cells by mitosis and meiosis
  2. asexual and sexual reproductive cells
  3. gametophytes and sporophytes
  4. diploid and haploid cells
Grade 11 Botany
Specialized epidermal tissue in plants includes what?
  1. trichomes
  2. root hairs
  3. guard cells
  4. all of the above
Grade 11 Botany
Grade 11 Botany
What is the function of guard cells?
  1. They store carbohydrates.
  2. They control the size of the stomata.
  3. They absorb minerals from the soil.
  4. They help support the plant.
Grade 11 Botany
Grade 11 Botany
Thigmotropism is a plant response to
  1. light.
  2. gravity.
  3. oxygen.
  4. touch.
Grade 11 Botany
Positive thigmotropism is a response                .
  1. toward heat
  2. away from heat
  3. towards touch
  4. away from touch
Grade 11 Botany
The hormone responsible for bending plants towards light is
  1. auxin.
  2. cytokine.
  3. ethylene.
  4. gibberellin.
Grade 11 Botany
The region of actively dividing cells at the tip of a stem is
  1. dermal tissue.
  2. apical meristem.
  3. lateral meristem.
  4. vascular tissue.
Grade 11 Botany
Chlorophyll absorbs which wavelengths of light best?
  1. red-blue
  2. yellow-orange
  3. green
  4. blue-green
Grade 11 Botany
The budding of plants in spring is a response to
  1. circadian rhythms.
  2. photoperiodism.
  3. heliotropism.
  4. nastic movement.
Grade 11 Botany
Grade 11 Botany
Which statement is true of abscisic acid (ABA)?
  1. Once ABA is applied to plants, the dormancy it induces cannot be reversed.
  2. The primary role of ABA is to inhibit growth.
  3. ABA levels decrease in response to changes in temperature and light, such as those that occur when seasons change.
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