A. Eutrophication
B. Nitrification
C. Denitrification
D. Sedimentation
Related Mcqs:
- Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?
A. 16
B. 17
C. 18
D. None of the aboveSubmitted by: Shafiq Rehman
- The process by which nutrients chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil:
A. Infiltration
B. Percolation
C. Leaching
D. SeepingSubmitted by: Shafiq Rehman
- Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:
A. Capillary water
B. Hygroscopic water
C. Gravitational water
D. None of the aboveSubmitted by: Shafiq Rehman
- Deep percolation from a soil profile is generally measured by a device known as_____________________?
A. Hydrometer
B. Lysimeter
C. Thermometer
D. Tensiometer - Potassium plays a significant role in the transport of water & nutrients through the plant in the xylem. When the supply of K is reduced, the transportation of ___________________ is depressed:
A. Nitrates, Phosphates
B. Calcium, magnesium
C. Amino acids
D. All of the aboveSubmitted by: Shafiq-ur-Rehman
- calcium is immobile in plants. Therefore, under conditions of deficiency, young tissue is affected first. calcium deficiency symptoms are:
A. Death of terminal buds; roots tips also affected
B. Abnormal dark green appearance of foliage
C. Premature shedding of blossoms & buds & weakened stem
D. All of the aboveSubmitted by: Shafiq-ur-Rehman
- Accumulation of soluble salts root zone is known as____________________?
A. Desodication
B. Sodication
C. Degradation
D. Salininzation - Mutant allele that has little or no effect on the expression of a tart is known as_____________________?
A. Atavism
B. Auxotroph
C. Axoneme
D. Armor - Commercial production of fruits is known as_____________________?
A. Pomology
B. Orchading
C. Horticulture
D. Olericulture - Some substance are added intentionally to foods for the purpose of marketing them more profit able are known as_____________________?
A. Food contamination
B. Food adulterants
C. Food additives
D. All the above