Question

Write down the forms of n p s and Fe which are absorbed by plant

Answer 1

1. Nitrogen- Nitrate ( NO3-), Nitrite ( NO2-)and ammonia ( NH4+)
2. Phosphorus- H2PO4^- , HPO4^-
3. Sulphur- sulphate (SO4^2-)
4. Iron- In plants it is absorbed as ferric ion (fe3+) but in metabolic processes it is functional as ferrous ion( fe2+)