식물영양학 중간고사 3 T/F

Azotobacter is non-symbiotic bacteria. ( T )

 

NH4+-form of N  → increase soil pH ( F )

 

S is immobile ( T )

 

N is immobile ( F )

 

The main inorganic forms of phosphorus in soil are H2PO4- and H2PO42- ( T )

 

P deficiency occurs in older leaves first ( T )

 

Lime promotes adsorption of P in soils ( F )

 

Potassium ions can regulate water movement in guard cell membranes ( T )

 

Calcium is mobile and component of cell wall ( F )

 

CaO induces increase of soil pH ( T )

 

Mg is a core component of chlorophyll molecule ( T )

 

Mn is not required for chlorophyll synthesis ( F )

 

Flooding decreases Mn availability in soils ( F )

 

Zn is involved in detoxification superoxide radical ( T )

 

Cu is mobile ( F )

 

Mo is required in nitrogen fixation ( T )

 

Co is required in nitrogen fixation ( T )

 

B is mobile ( F )

 

Si is not required in rice grain weight ( F )