30 Questions
Which of the following is true about the energy pyramid?
Energy decreases as it moves up the trophic levels
What is the main source of energy on Earth?
Sun
What is the term used to describe the rate at which organisms collectively synthesize organic matter?
Primary productivity
Which of the following is an example of a biogeochemical cycle?
Water cycle
What is the main reservoir for phosphorus?
Lithosphere
Which human activity significantly impacts the nitrogen cycle?
Burning fossil fuels
Which nutrient is a limiting nutrient in more than a third of the world's oceans?
Iron
What is the main reservoir of carbon in the carbon cycle?
Oceans
Which process is involved in the nitrogen cycle?
Nitrification
What is the human impact on the phosphorus cycle?
Deforestation
What is the main reservoir of sulfur in the sulfur cycle?
Rocks
What is the potential impact of providing iron to microalgae?
Reducing carbon dioxide in the atmosphere
Which is the main source of energy on Earth?
Radiant energy
What happens to energy as it moves up the trophic levels in an ecosystem?
It decreases
What is the process by which energy is released from the consumption of other animals?
Chemical bond energy release
What is the role of autotrophs in energy transfer through ecosystems?
They convert sunlight into chemical energy
What happens to energy during respiration at each trophic level?
It is converted to heat
What is the importance of the visible light spectrum in photosynthesis?
It is used for photosynthesis
Which of the following is true about energy flow in ecosystems?
Energy is lost through respiration and heat loss
Which of the following is NOT a trophic level?
Autotroph
Which of the following is true about the conversion of solar radiation into chemical energy by primary producers?
Only a small percentage of solar radiation is converted into chemical energy
What happens to energy as it moves up the trophic pyramid?
Energy is lost through respiration and heat loss
Which of the following is true about the visible light spectrum for photosynthesis?
Green light is not efficient for photosynthesis
What is the main source of energy on Earth?
Radiant energy
Which of the following is true about the relationship between animal size and resting metabolic rate?
Resting metabolic rate increases as mass increases
Which of the following statements about larger animals is true?
Larger animals lose energy slower per gram than smaller animals
What happens to the surface area relative to body mass as an animal's volume increases?
Surface area relative to body mass increases more slowly
Which of the following is true about tropical areas with high productivity?
Tropical areas have increased species diversity
What is the majority of biomass on Earth derived from?
Primary producers
Which of the following is an example of a biogeochemical cycle?
Water cycle
Study Notes
Biogeochemical Cycles and Nutrient Limitations in Ecosystems
- Resting metabolic rate increases as mass increases in animals.
- Larger animals lose energy slower per gram than smaller animals due to slower heat loss.
- Surface area relative to body mass increases more slowly as volume increases.
- Tropical areas with high productivity have increased species diversity.
- Majority of biomass on Earth is from primary producers.
- Nutrients and matter constantly cycle through the atmosphere, lithosphere, and hydrosphere.
- Water cycle is an example of a biogeochemical cycle.
- Carbon, nitrogen, phosphorus, and sulfur are important nutrient cycles.
- Human activities, such as burning fossil fuels and deforestation, affect the carbon cycle.
- Phosphorus is required by all organisms for DNA, membranes, and energy.
- Nitrogen is a major component of amino acids and nucleic acids.
- Sulfur is a component of many amino acids and proteins.
Test your knowledge on biogeochemical cycles and nutrient limitations in ecosystems with this quiz. Learn about the importance of nutrients and matter cycling through different spheres, the role of various elements like carbon, nitrogen, phosphorus, and sulfur, and how human activities impact these cycles. Explore the relationship between organism size, energy loss, and species diversity in different ecosystems. Challenge yourself with questions on resting metabolic rate, biomass distribution, and the water cycle.
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