agriculture MCQs – Page 128

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

2541. The appropriate method to apply phosphatic fertilizers is__________?
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A. Top dressing

B. Broad casting

C. both A and B

D. Basal placement
2542. Propagation and release of sterile incompatible individuals is done in pest population is called:____________?
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A. Genetic control

B. both A & B

C. None of these

D. Chemical control

2543. Phosphorus (P) is the second major nutrient essential for plant growth. With the exception of Nitrogen (N) and Potassium (K), Phosphorus is required by plants in_________?
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A. Lesser quantities

B. Greater quantities

C. The above statement is wrong

D. Not required

2544. Training includes which one of the following operations?
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A. Only tying

B. Only supporting

C. All of the above

D. Only propping

2545. The marble is a__________?
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A. Thermo metamorphic

B. Not sure

C. Dynamo metamorphic

D. Hydro metamorphic

2546. In Balochistan, deserts also exists in _________, which supoorts wind erosion excluding rocky mountains:
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A. Desert of Kharan

B. Noshki

C. Both A & B

D. Qilla SaifUllah

2547. Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?
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A. 18

B. None of the above

C. 16

D. 17

2548. Roots usually occupy :__________?
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A. 20% or less of soil volume

B. 1% or less of soil volume

C. 10% or less of soil volume

D. 30% or less of soil volume

2549. Granite and Basalt are examples of:___________?
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A. Stratified rocks

B. Aqueous rocks

C. >None of the above

D. Sedimentary Rocks

2550. The tree sends down roots from its branches to the soil is know as:_______?
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A. Banyan

B. Palm

C. Pine

D. Oak

2551. If the chlorophyll content in plant increases, the solar radiation transmitted:
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A. None of these

B. Decreases

C. Constant

D. Increases

2552. Rhizoplane is________?
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A. An area of soil from root surface to 5 cm

B. All of them

C. Area within the roots

D. Root surface
2553. _________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.
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A. Gully erosion

B. Rain splash rill erosion

C. Sheet erosion

D. Stream bank erosion

2554. The process of transformation of raw organic matter into humus:
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A. Humification

B. Calcification

C. Illuviation

D. Horizonation

2555. A and B horizon is called as_________?
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A. None of the above

B. Inner core

C. Solam

D. Regolith

2556. BGA was discovered as a nitrogen fixer in paddy field by ?
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A. Beijerinck

B. None of the above

C. P.K dey

D. Fred

2557. The soils in which the weathered material is taken away to other place by several agents are called__________?
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A. Aeolian soil

B. Alluvial soil

C. None of these

D. Transported soil
2558. The largest soil order in Pakistan?
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A. Entisols

B. Inceptisols

C. Vertisols

D. Aridisols
2559. Which of the following techniques is/are used for the soil fertility evaluation?
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A. All of these

B. Plant tissue testing

C. Soil testing

D. Aspergillus niger test

2560. What is the optimum temperature and pH for nitrifying bacteria ?
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A. 25-40 c, pH 8-8.5

B. All of thses

C. >35 c, pH less than 5

D. 30-35 c, pH 5.5