37 Questions
What is the process by which plants convert sunlight into chemical energy?
Photosynthesis
What molecule is produced during the carbon fixation reactions of photosynthesis?
Glucose
Which of the following is an alternative system of carbon fixation adapted to hot temperatures?
C4 cycle
What is the enzyme responsible for capturing CO2 in the Calvin cycle?
Rubisco
What is the process by which plants lose water through their stomata?
Transpiration
What is the optimal temperature range for C4 plants?
30-47°C
Which of the following is a characteristic of C4 plants?
Light efficiency of nearly 100%
What is the process by which atmospheric nitrogen is made available to plants?
Symbiotic nitrogen fixation
Which of the following is a characteristic of C3 plants?
Minimum CO2 requirement of 0-10 ppm
What is the term used to describe a plant's reaction to changing lengths of darkness?
Photoperiodism
What is the primary function of Rubisco?
To catalyze the initial reaction of carbon fixation
What is photorespiration?
The light-dependent oxidation of RuBP, leading to the release of CO2
Which of the following best describes the process of respiration?
The conversion of sugars into energy for use in metabolism
What is the primary difference between annual and perennial plants?
Annual plants complete their life cycle in one growing season, while perennials persist for three or more years
What is the chemical equation for respiration?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy
What is the primary function of transpiration?
To facilitate the uptake of water and minerals from the soil
What is the term used to describe plants that persist for three or more years?
Perennial
What is the term used to describe plants that are managed as annuals, despite being perennials or biennials?
Pseudo-annual
Which process is responsible for the irreversible increase in plant size due to an increase in the number and size of cells?
Growth
What is the term used to describe the transition of plants from one developmental stage to another, such as from germination to seedling, vegetative, flowering, and seed production?
Development
In photosynthesis, what is the primary function of the light reactions?
Produce NADPH and ATP
Which enzyme plays a crucial role in capturing carbon dioxide during photosynthesis?
Rubisco
What is the main advantage of C4 plants over C3 plants in terms of photosynthetic efficiency?
Reduced photorespiration
Which process is responsible for converting sunlight into chemical energy during photosynthesis?
Light reactions
What is the primary function of symbiotic nitrogen fixation in plants?
Convert atmospheric nitrogen into a usable form
Which of the following environmental conditions is most favorable for C4 plants compared to C3 plants?
Hot temperatures
What is the primary purpose of transpiration in plants?
Regulate gas exchange
What is the primary function of Rubisco in plants?
To capture CO2 during the Calvin cycle
What is the term used to describe the process of water loss through plant stomata?
Transpiration
What is the term used to describe plants that complete their life cycle within one year or growing season?
Annual
What is the chemical equation that represents the process of respiration in plants?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy
What is the term used to describe plants that persist for three or more years or growing seasons?
Perennial
What is the term used to describe plants that are managed as annuals, despite being perennials or biennials?
Pseudo-annual
What is the primary function of transpiration in plants?
To regulate the temperature of the plant
What is the term used to describe plants that complete their life cycle over two growing seasons?
Biennial
What is the term used to describe the transition of plants from one developmental stage to another, such as from germination to seedling, vegetative, flowering, and seed production?
Development
What is the primary difference between annual and perennial plants?
Annuals complete their life cycle in one growing season, while perennials persist for three or more years
Test your understanding of key concepts in plant physiology and growth, including photosynthesis, respiration, transpiration, symbiotic nitrogen fixation, and photoperiodism. Learn about the different categories of plants such as annual, biennial, and perennial.
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