Assertion :Phosphorus cycle is an imperfect cycle as a sufficient amount of phosphorus combines with $A l^{3 +}$ , $F e^{2 +}$ and $C a^{2 +}$ to form insoluble and unavailable salts.
Reason :Phosphate circulates in abiotic environment in lithosphere as well as atmosphere.

Question

Assertion :Phosphorus cycle is an imperfect cycle as a sufficient amount of phosphorus combines with

A l^{3 +}

,

F e^{2 +}

and

C a^{2 +}

to form insoluble and unavailable salts.
Reason :Phosphate circulates in abiotic environment in lithosphere as well as atmosphere.

Filo · Accepted Answer

Phosphorus cycle is an example of sedimentary cycle. Greatest reservoir 
of phosphate in the world is relatively insoluble ferric and calcium 
phosphate in rocks. Cyclic pool is soil for terrestrial 
ecosystems(lithosphere) and water for aquatic ecosystem(hydrosphere). 
Phosphate circulates in the abiotic environment in lithosphere as well 
as hydrosphere. Atmosphere or gaseous cycle is absent. Inside soil some 
phosphorus is lost through leaching. Similarly, a sufficient amount of 
phosphorus combines with calcium, iron or aluminum and becomes 
insoluble. It settles down at the bottom of lake or ocean as sediment. 
Bone and teeth may also remain undegraded. Such phosphorus becomes part 
of lithosphere. It is released after a very long interval when the rocks
 containing them are exposed to weathering agencies or are mined. Thus, 
phosphorus cycle is an imperfect cycle.So, the correct answer is 'Assertion is correct but Reason is incorrect'.

Question Text	Assertion :Phosphorus cycle is an imperfect cycle as a sufficient amount of phosphorus combines with $A l^{3 +}$ , $F e^{2 +}$ and $C a^{2 +}$ to form insoluble and unavailable salts. Reason :Phosphate circulates in abiotic environment in lithosphere as well as atmosphere.
Answer Type	Text solution:1
Upvotes	150

Assertion :Phosphorus cycle is an imperfect cycle as a sufficient amount of phosphorus combines with $A l^{3 +}$ , $F e^{2 +}$ and $C a^{2 +}$ to form insoluble and unavailable salts.
Reason :Phosphate circulates in abiotic environment in lithosphere as well as atmosphere.

Text solutionVerified

Practice questions from similar books

Assertion :Phosphorus cycle is an imperfect cycle as a sufficient amount of phosphorus combines with Al3+, Fe2+ and Ca2+ to form insoluble and unavailable salts. Reason :Phosphate circulates in abiotic environment in lithosphere as well as atmosphere.

Text solutionVerified

Practice questions from similar books

Assertion :Phosphorus cycle is an imperfect cycle as a sufficient amount of phosphorus combines with $A l^{3 +}$ , $F e^{2 +}$ and $C a^{2 +}$ to form insoluble and unavailable salts.
Reason :Phosphate circulates in abiotic environment in lithosphere as well as atmosphere.