Biogeochemical Cycles
Biology ⇒ Ecology and Environment
Biogeochemical Cycles starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Biogeochemical Cycles.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
Describe the process of denitrification and its significance in the nitrogen cycle.
Describe the process of transpiration in the water cycle.
Describe the role of lightning in the nitrogen cycle.
Explain how deforestation can affect the carbon cycle.
Explain how human activities can lead to eutrophication in aquatic ecosystems.
A farmer adds fertilizer to his field, which runs off into a nearby lake. What is the most likely consequence for the lake ecosystem? (1) Increased fish population (2) Eutrophication (3) Decreased plant growth (4) Reduced nutrient levels
A factory releases large amounts of nitrogen oxides into the atmosphere. Describe the potential impact this could have on both terrestrial and aquatic ecosystems.
A region experiences a prolonged drought, drastically reducing the amount of water available for plant uptake. Explain how this could impact the cycling of carbon and nitrogen in the ecosystem.
A farmer adds fertilizer to his field, which runs off into a nearby lake. What is the most likely consequence for the lake ecosystem? (1) Increased fish population (2) Eutrophication (3) Decreased plant growth (4) Reduced nutrient levels
Which cycle does not have a significant atmospheric component? (1) Carbon cycle (2) Nitrogen cycle (3) Phosphorus cycle (4) Water cycle
Which of the following is a gaseous biogeochemical cycle? (1) Phosphorus cycle (2) Sulfur cycle (3) Nitrogen cycle (4) Both 2 and 3
Which of the following is a human activity that disrupts the carbon cycle? (1) Planting trees (2) Burning fossil fuels (3) Photosynthesis (4) Decomposition
Fill in the blank: The process by which bacteria convert atmospheric nitrogen into ammonia is called __________.
Fill in the blank: The process by which plants release water vapor into the air is called __________.
Fill in the blank: The process by which plants take up nitrates from the soil is called __________.
Fill in the blank: The process by which water changes from a liquid to a gas is called __________.
Nitrogen fixation is carried out by certain bacteria. True or False?
True or False: All biogeochemical cycles are closed systems with no input or output from outside the Earth.
True or False: Animals can directly use atmospheric nitrogen for their metabolic processes.
True or False: Decomposition releases nutrients back into the soil.
