1.

In what form do plants absorb phosphorus from the soil ? Name one cell organelle and one organic molecule that require phosphorus in the cell. List any two phosphorus deficiency symptoms in leaves.

Answer»

(i) Plants absorb phosphorus from the soil in the form of phosphate ions (either as H2PO4 or as H2PO2-4 ).

(ii) Phosphorus is a constituent of cell membrane. 

(iii) It is a constituent of nucleic acids, proteins and the nucleotides. 

(iv) Two phosphorus deficiency symptoms are : 

(a) Delay in seed germination. 

(b) Purple spots on the leaves of the plants.



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