Which of the following statements best characterises micronutrients ?
They include elements which are less essential for plant body.
They occur in such small amounts that we cannot detect in plant tissue.
They are essential elements which are required by plant in small amount.
They are required by plant in excess of 10mmol/kg of dry matter.
Micronutrients are needed in small amounts less than 10 mmole/kg of dry matter by a plant.