Essentiality criteria of an element :

A. In the absence of an element, its not possible for plant to complete its vegetative cycle.
B. The role played by an element is specific & can not be replaced by another element.
C. The element is directly involved in the nutrition of the plant.
D. All of these

Submitted by: Shafiq Rehman

Related Mcqs:

The seventieth element included in the list of essential nutrient element is:__________?
A. Vanadium
B. Cobalt
C. Sodium
D. Nickle
Submitted by: Shafiq Rehman
Which element can be fixed by smecitite___________________?
A. Mgº
B. Kº
C. NH2
D. Both b & c
The nutrient element silicon (Si) is:_________?
A. Beneficial
B. Harmful
C. Both a and b
D. None of the above
Submitted by: Shafiq Rehman
Element responsible pollen grain of plant__________?
A. N
B. P
C. K
D. B
Submitted by: Hakeem Taj Shapuki
Which element is known as chemical police man of plant?
A. Magnesium
B. Phosphorus
C. Potassium
D. All of the above
Submitted by: Shafiq Rehman
Which element is found highest in earth crust?
A. Aluminum
B. Silicon
C. Sodium
D. None of the above
Submitted by: Shafiq Rehman
Weathering is_______________________?
A. Destructive process
B. Constructive process
C. Both a & b
D. None of the above
Which mineral contain phosphorus__________________?
A. Igneous
B. Metamorphic
C. Apatite
D. None of the above
Fe, Zn, Mn, Mo, Co, Ni, Cu, are also called __________:
A. Micro elements
B. Trace elements
C. Both A & B
D. None of these
Submitted by: Shafiq Rehman
Ammonium sulfate fertilizer containing 21% N & 24% S, is best in top dressing in:_________?
A. Barley
B. Rice
C. Date palm
D. None of these
Submitted by: Shafiq Rehman