Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
Which of the following biological molecules require phosphorus for their formation?
(Select all that apply)
carbohydrates
lipids
ATP
nucleic acids (DNA and RNA)
phospholipids
amino acids
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In nature, phosphorus predominantly exists as:
phosphoric acid (H3PO4)
phosphine (PH3)
phosphate ions (PO43-)
phosphorus pentoxide (P2O5)
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Which of the following processes is NOT a key step in the phosphorus cycle?
weathering
photosynthesis
decomposition
absorption by producers
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The mutually beneficial relationship between plants and fungi through mycorrhizae is called:
predation
mutualism
amensalism
parasitism
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In the phosphorus cycle, which process releases phosphate ions into soil and water, making them available for uptake by producers?
weathering
fertiliser use
consumption
decomposition
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Which organisms break down dead material, releasing phosphate ions for reabsorption by producers?
producers
herbivores
saprobionts
carnivores
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Which of the following processes is responsible for the reformation of sedimentary rocks in the phosphorus cycle?
(Select all that apply)
sedimentation
deposition
fertiliser use
weathering
absorption by producers
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Which of the following is NOT a benefit of mycorrhizae for plants?
retention of moisture and minerals in the roots
protection against herbivores
increased root surface area
efficient absorption of water and mineral ions
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Which of the following processes does NOT directly contribute to the movement of phosphates through ecosystems?
consumption
absorption by producers
nitrogen fixation
excretion and death
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Mycorrhizal fungi form extensive networks that aid in the efficient absorption of water and mineral ions. These networks are associated with:
plant stems
plant leaves
plant roots
plant flowers
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