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Questions and Answers
How does extreme heat influence crop quality?
How does extreme heat influence crop quality?
- Longer bloom period
- Loss of sweetness in fruit (correct)
- Larger flowers and fruit
- Higher yields due to increased photosynthesis
Which is correct about photosynthesis?
Which is correct about photosynthesis?
- Uses oxygen
- Stores energy (correct)
- Occurs 24 hours a day
- Releases water and carbon dioxide
In the arid climate of the west, what is the influence on neighborhood summer temperatures when water restrictions prohibit land irrigation?
In the arid climate of the west, what is the influence on neighborhood summer temperatures when water restrictions prohibit land irrigation?
- Little influence if we use more native plants
- Little influence if we just plant more large trees to add shade
- Temperatures rise significantly (correct)
- Being environmentally responsible, we should avoid landscape irrigation
Which degree of shade has the lowest amount of light?
Which degree of shade has the lowest amount of light?
In photoperiod effects, if a short-day plant is given a short night, it will?
In photoperiod effects, if a short-day plant is given a short night, it will?
What does hardiness zone indicate?
What does hardiness zone indicate?
Which is correct about flower gardens in cooler, higher elevation mountain communities?
Which is correct about flower gardens in cooler, higher elevation mountain communities?
Which is correct about temperatures for cool season crops such as broccoli and cauliflower?
Which is correct about temperatures for cool season crops such as broccoli and cauliflower?
Which is correct about temperatures for warm season crops like tomatoes?
Which is correct about temperatures for warm season crops like tomatoes?
Which degree of shade is on the north side of a building where direct sunlight is blocked during much of the day?
Which degree of shade is on the north side of a building where direct sunlight is blocked during much of the day?
Which is correct about microclimates?
Which is correct about microclimates?
How does a sudden and significant drop in winter temperatures affect a woody plant's hardiness?
How does a sudden and significant drop in winter temperatures affect a woody plant's hardiness?
Bud break and blooming of temperate zone woody plants is controlled by the rest period. What is the rest period?
Bud break and blooming of temperate zone woody plants is controlled by the rest period. What is the rest period?
Which is NOT a generic symptom of water stress?
Which is NOT a generic symptom of water stress?
Which is NOT a symptom of waterlogged soils?
Which is NOT a symptom of waterlogged soils?
Which is NOT a factor of plant hardiness?
Which is NOT a factor of plant hardiness?
What does the following equation describe? C6H12O6 + 6O2 = 6CO2 + energy
What does the following equation describe? C6H12O6 + 6O2 = 6CO2 + energy
Which is a factor in how a plant balances top growth with root growth?
Which is a factor in how a plant balances top growth with root growth?
How does a plant know up from down?
How does a plant know up from down?
How does a plant grow toward light?
How does a plant grow toward light?
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Study Notes
Crop Quality and Heat
- Extreme heat leads to a loss of sweetness in fruit, affecting the overall quality of crops.
Photosynthesis Fundamentals
- Photosynthesis is primarily a process that stores energy for plants.
Effects of Water Restrictions
- In arid climates, lack of irrigation significantly raises neighborhood summer temperatures.
Shade Types and Light Levels
- Closed canopy provides the lowest amount of light compared to other shade types.
Photoperiod Effects on Plant Growth
- Short-day plants grow vegetatively when given a short night, affecting blooming patterns.
Hardiness Zones
- The hardiness zone indicates the average minimum temperature of a geographic area, crucial for plant survival.
Flower Gardens in Mountain Communities
- In cooler, higher elevation areas, it is advisable to avoid late summer and fall blooming plants due to shorter growing seasons.
Temperature Needs for Cool Season Crops
- Cool season crops like broccoli and cauliflower thrive at optimum temperatures between 65 to 80 degrees Fahrenheit.
Warm Season Crop Temperature Requirements
- Warm season crops, such as tomatoes, require soil temperatures between 50 to 100 degrees for germination.
Shade Definitions
- Open shade occurs on the north side of a building, where direct sunlight is blocked throughout the day.
Microclimates
- Temperature decreases with elevation, impacting plant growth and adaptation in different areas.
Impact of Sudden Temperature Drops
- Woody plants can sustain damage from sudden drops in winter temperatures, particularly with significant declines.
Rest Period in Woody Plants
- The rest period is defined as the accumulation of hours below the threshold temperature, typically set at 45 degrees Fahrenheit.
Water Stress Symptoms
- Common symptoms of water stress in plants include decline from the top down, leaf scorch, and small, discolored leaves; delayed fall color is not a typical symptom.
Symptoms of Waterlogged Soils
- Symptoms of waterlogged soils include plant wilting, root rot, and decreased root growth; yellowing of older leaves is not a characteristic for waterlogged conditions.
Factors Influencing Plant Hardiness
- Factors influencing plant hardiness do not include average frost rate; other factors like recent temperature changes and carbohydrate reserves play critical roles.
Respiration Equation
- The equation C6H12O6 + 6O2 = 6CO2 + energy describes respiration, a vital process for energy release in plants.
Growth Balance in Plants
- Gibberellins produced in root growing tips encourage canopy growth, showing the interplay between top and root development.
Plant Orientation and Growth
- Auxins play a key role in how a plant senses its orientation, accumulating on the lower side to promote upward growth.
Light Direction and Plant Growth
- Plants grow toward light due to auxin accumulation on the shade side, which elongates cells and directs growth upward.
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