agriculture MCQs – Page 139

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 Review each marked answer and report any item that may be outdated or unclear.

2761. Erosion permitting and erosion resisting crops grow alternatively at right angle to the slope of the land is called as:_________?
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A. Strip planting

B. Linear planting

C. All of the above

D. Cover planting

2762. Items needed for synthesis of plant food in green leaves are _________ & the process through which it takes place is called photosynthesis:
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A. Sunlight

B. Water & plant nutrients

C. Chlorophyll

D. All of the above
2763. N and P sprayed on the leaves at time of flowering results in:________?
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A. Increase in fruit yield

B. None of these

C. Increase fruit yeid & protein

D. Improve their protein

2764. Inorganic constituents vary in size from fine clay particles _________ mm to large _________ mm gravel and rock:
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A. None of the above

B. 0.5 mm 1.0 mm

C. 0.02 mm- 0.2 mm

D. < 0.002 mm- >2 mm
2765. calcium is immobile in plants. Therefore, under conditions of deficiency, young tissue is affected first. calcium deficiency symptoms are:
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A. All of the above

B. Death of terminal buds; roots tips also affected

C. Premature shedding of blossoms & buds & weakened stem

D. Abnormal dark green appearance of foliage

2766. Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
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A. Acid rain

B. Neutral rain

C. Both A & B

D. None of the above

2767. Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:
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A. High temperature

B. Alkaline

C. Both a & b

D. None of a & b

2768. Vegetation found in saline soils is termed by _________?
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A. Hetrophyics

B. Halophyte

C. Hortiphyics

D. Viticphyics

2769. When seed leaves the fruit or flower is called__________?
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A. None of these

B. Dormancy

C. Dissemination

D. Quiescent.

2770. Which one of the following is a high salt tolerant crop?
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A. Moong

B. Arhar

C. Both a & b

D. Lucerne
2771. If the quantity of organic matter is more than 50% is called________?
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A. Clay soil

B. Peat soil

C. Sandy soil

D. All of these

2772. Auto polyploidy have been successfully exploited in _________?
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A. Maize

B. Sunflower

C. Sugar beat

D. Sugarcane

2773. The disc florets of sunflower is__________?
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A. Usually sterile

B. Bisexual

C. Staminate

D. Pistillate

2774. The drawbacks of erosion can be divided into:__________?
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A. Onsite damages

B. Offsite damages

C. Both A & B

D. None of the above

2775. Father of weed Science?
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A. Norman Borlog

B. Simonson

C. None of the above

D. Jethrotull
2776. The forest soils have lower bulk density than agricultural soils because of their ______ content.
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A. High organic matter

B. Low organic matter

C. Both a & b

D. None of these

2777. Almost one third of the land area through out the world is affected by land degradation. Pakistans agriculture sector though facilitates employment to >65% but is facing challenges from:
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A. Waterlogging

B. Salinity

C. All of the above

D. Erosion

2778. Auxin is_______?
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A. A protein

B. A vitamin

C. An enzyme

D. A hormone
2779. Worlds major food crops belong to which of the following family?
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A. Palmaceae

B. Moraceae

C. Both a & b

D. Gramineae
2780. A Stalk connecting an ovule or a seed with the placenta (the ovary)?
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A. Aril

B. Funiculus

C. Raphe

D. Hilum