The Phosphorus cycle

Question 1

How is phosphate in rocks?

Answer 1

The decomposition of PO4 3- in waste and remains

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

Question 2

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

Answer 2

Excretion and death and decomposition of animals

Question 3

How does PO4 3- find itself in animals?

Answer 3

feeding and digestion of phosphorus-containing plants

Question 4

How does PO4 3- find itself in plants?

Answer 4

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

Question 5

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

Answer 5

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

Question 6

What are Mycorrhizae and what do they do?

Answer 6

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