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17 questions
____________ cycles connect biological, geological and chemical aspects of organisms in a biosphere
Ecological
Hydrological
Transpiration
Biogeochemical
What type of organism converts nitrogen into a usable form for plants?
fungus
bacteria
mold
earthworms
Which statement is true of the biogeochemical cycle?
Phosphate ions can be soaked up by plants and be incorporated into their tissues.
Phosphorus can be released in the form of phosphate ions when exposed to water.
An animal that eats a plant can then incorporate phosphate ions into its tissue.
All statements are true.
Which of the following statements is true?
Rocks are not a part of the biogeochemical cycle of phosphorus.
Humans cannot impact the biogeochemical cycles of elements.
Human activities can impact the biogeochemical cycle of phosphorus. When fertilizers are manufactured and applied on land, they can speed up the phosphorus cycle.
Bacteria are not a part of the biogeochemical cycle of phosphorus.
Which of the following is a definition of a biogeochemical cycle?
The movement of elements through organisms and the environment
The way that new elements are created on earth.
The way that elements are lost on earth
The movement of elements in organisms' bodies only
When water is used for irrigation, only about one-half can be used again. Much of this water is lost for use on land because it _____________ back into the air.
transpires
evaporates
precipitates
condenses
What two processes fuel the carbon cycle?
cellular respiration and photosynthesis
transpiration and transport
cellular respiration and transpiration
photosynthesis and transport
CO2 is returned to the atmosphere by all methods EXCEPT
combustion.
photosynthesis.
decomposition.
respiration.
Soil bacteria are responsible for any steps in the nitrogen cycle. Soil bacteria are NOT responsible for
assimilation.
nitrogen fixation.
ammonification
nitrification.
Your body needs nitrogen for which of the following?
muscles
DNA
skin
all answers are correct
Bacteria that live on the roots of some plants and change nitrogen into ammonium are called:
assimilation
nitrogen-fixers
nitrification
All answers are correct
Which of the following processes takes carbon out of the short-term carbon cycle?
decomposition of dead organic matter
formation of calcium carbonate by corals
formation of wood by trees
cellular respiration
photosynthesis
What is the largest pool of carbon on the planet?
Sediments in the deep ocean
Fossil Fuels
Biomass that makes up all living matter
Carbon dioxide dissolved in the oceans
Atmospheric carbon dioxide
Phosphorus is an essential nutrient for plants and animals. Phosphorus normally occurs in nature as part of a phosphate ion (PO4)3. As you can see from the diagram of the phosphorus cycle, phosphorus is a component of plant fertilizers. Two of the critical roles phosphorus plays in life on Earth is that it is a component of ATP as well as all
amino acids.
cell membranes.
carbohydrates.
cellular cytoplasm.
How do sulfur and phosphorus move from the biotic to the abiotic pools during their cycles?
Plant material is deposited in layers of ponds and lakes
Primary consumers eat producers
Secondary consumers eat primary consumers
Decomposers break down the remains of producers and consumers.
How does phosphorus enter an ecosystem?
Through the weathering of rocks
Through decaying plants
Through animal waste
All of the answers are correct.
Humans add phosphorus to the phosphorus cycle through _____.
Waste
Fertilizer
Both fertilizer and waste
None of the answers are correct.
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