Propagation and release of sterile incompatible individuals is done in pest population is called:____________?

A. Chemical control
B. Genetic control
C. Both  a & b
D. None of these

Nitrogen fixation is accomplished by:_________?

A. Fungi
B. Bacteria from atmosphere
C. Plants
D. None of these

Which one of the following clay mineral has the highest CEC?

A. Kaolinite
B. Montmorillonite
C. Vermiculite
D. Illite

“Soil” word derive from which language?

A. English
B. Greek
C. Latin
D. None of the above

Fossils are found in__________type of rocks:

A. Sedimentary rocks
B. Metamorphic rocks
C. Aqueous rocks
D. Both a & c

In tomato, Boron deficiency leads to:__________?

A. Silvering
B. Piffiness
C. Cracking
D. All of the above

Soil erosion is __________ of soil from one place ti another place by natural agencies (wind & water):

A. Detachement of soil
B. Transportation
C. Both a & b
D. None of these

Fe, Zn, Mn, Mo, Co, Ni, Cu, are also called __________:

A. Micro elements
B. Trace elements
C. Both a & b
D. None of these

Ca, Mg, S are called__________?

A. Primary nutrients
B. Minor nutrients
C. Excellent nutrients
D. None of these

In Balochistan, deserts also exists in _________, which supoorts wind erosion excluding rocky mountains:

A. Desert of kharan
B. Noshki
C. Both a & b
D. Qilla saifullah