The Phosphorus cycle Flashcards

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1
Q

How is phosphate in rocks?

A

The decomposition of PO4 3- in waste and remains

The sedimentation of PO4 3- in oceans lakes rivers and soils

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2
Q

How does PO4 3- find itself in waste and remains?

A

Excretion and death and decomposition of animals

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3
Q

How does PO4 3- find itself in animals?

A

feeding and digestion of phosphorus-containing plants

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4
Q

How does PO4 3- find itself in plants?

A

absorption of phosphorus from oceans, lake, river, and soils

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5
Q

How does PO4 3- find itself in oceans, lakes, rivers and soils?

A

excretion of PO4 3- by animals
erosion of wastes and remains
erosion of rocks
use of phosphorus in fertilisers

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6
Q

What are Mycorrhizae and what do they do?

A

A fungus that acts as an extension of a plants roots system
its stores’ Water and other nutrients
it improves the absorption of ions from the soil such as phosphorus
the fungus has a mutualistic relationship with plants

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