3351. Agro ecological regions of sindh are_____________________?
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A. 3

B. 4

C. 5

D. 1

3352. Root nodules in plant help in__________________?
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A. Aeration

B. Nitrogen fixation

C. Photosynthesis

D. Respiration

3353. Better crop establishment especially for direct seeded rice can be obtained by using________________?
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A. High density grain

B. Low density grain

C. Both a & b

D. None of the above

3354. Plants that can tolerate drought are_________________?
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A. Trunk plants

B. Xerophytes

C. Hydrophytes

D. None of the above

3355. The climates of sindh province comes under__________________?
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A. Temperature

B. all

C. Sub tropical

D. tropical

3356. Field capacity and permanent wilting point are different indifferent_______________?
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A. Regions

B. Seasons

C. Soils

D. Crops

3357. Critical factors for crop production is________________?
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A. Water

B. Land

C. Pure seed

D. fertilizer

3358. Bacillus thuringensis season cotton is a________________?
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A. Virus

B. Fungi

C. Bacteria

D. non of these

3359. Gassypium hirsutum is________________?
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A. Triploid

B. Tetraploid

C. Hexaploid

D. Diploid

3360. The living together of two or more species in a prolonged and intimate ecological relationship is called________________?
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A. Biosystem

B. Climate

C. Auto environment

D. Symbiosis
3361. Green revolution came into being due to evolution of_________________?
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A. Sugarcane varieties

B. Wheat varieties

C. All the above

D. Cotton varieties

3362. The critical stages in cotton is______________?
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A. Budding

B. Flowering

C. Boll .formation

D. All the above

3363. Plants grown in dry region are_________________?
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A. Xerophytes

B. Thermophyts

C. Halophytes

D. Mesophytes

3364. genetic purity of seed is determined by________________?
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A. All the above

B. Ageing test

C. Tz test

D. Grow out test
3365. Two much Mg may create deficiency for_____________________?
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A. K

B. Ca

C. N

D. P

3366. Major source of sugar in world is_________________?
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A. Dates

B. Beet root

C. Sugarcane

D. Water melon

3367. Precise assessment of pest pressure to evaluate Economic risk from pest infestations is called_________________?
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A. Economic threshold

B. Economic mjury level

C. None of the above

D. Crop scouting
3368. The ratio of actual cultivated area to a total farm area over a year is called__________________?
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A. None of the above

B. Cost-benefit ratio

C. Cropping pattern

D. Cropping intensity
3369. The Cotton plant belong to family ?
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A. Malvaceae

B. Fabaceae

C. Leguminaceae

D. Gramineae

3370. Among the important green house gases two are found in higher concentration________________?
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A. Methane and carbon mono oxide

B. None of the above

C. Carbon and nitrogen oxide

D. Methane and nitrogen

3371. Water courses are lined to avoid_________________?
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A. Transpiration

B. Evaporation

C. Seepage

D. Erosion

3372. Plants adopted to arid regions are___________________?
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A. Hydrophytes

B. Xerophytes

C. Aridic plants

D. Mesophytes

3373. Causal organism of root rot of cotton is_____________________?
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A. Rhizoeionia solani

B. Rhizoctonia bataticola

C. Both of them
3374. Among the cotton exporting countries the number of Pakistan is_______________?
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A. 1<sup>st</sup>

B. 3rd

C. 4<sup>th</sup>

D. 2<sup>nd</sup>

3375. Vigor index of seedings in rice can be determined on___________________?
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A. Quantitative basis

B. Qualitative basis

C. Both a & b

D. None of the above

3376. Percentage of area irrigated by a cusec of water during the season is called_______________?
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A. Cusec

B. Intensity

C. Irrigation frequency

D. Base period

3377. The lowest pest population that will cause economic damage is called__________________?
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A. Economic damage

B. Economic pest

C. None of the above

D. Economic threshold
3378. The soil has got______________?
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A. Two horizons

B. Seven horizons

C. Five horizons

D. Six horizons

3379. Fumigating and warming soil by covering it with black plastic is called__________________?
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A. Fumigation

B. Mulching

C. Soil solarization

D. None of the above

3380. A. income farm where the operator is producing primarly his familys needs rather than for sale is called_______________?
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A. Progressive farming

B. Intensive farming

C. Subsistence farming

D. Family farming

3381. Use of tetrazolium staining for assessment of seed quality was suggested by________________?
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A. Maguire (1962)

B. Moore (1973)

C. Woodstock (1973)

D. Germ (1950)

3382. Which is the most important cereal crop of temperature region________________?
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A. Wheat

B. Paddy

C. Barley

D. Maize

3383. The practice of producing two successive crops of same species from same piece of land in one year is called_________________?
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A. Doubling cropping

B. Intercropping

C. Monocropping

D. Cropping pattern

3384. The plants which grown on stream bank are__________________?
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A. None of the above

B. Bryophytes

C. Xerophytes

D. Pheritophytes
3385. A crop grown on residual moisture after harvesting rice is called__________________?
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A. Ratoon crop

B. Dubari crop

C. Sure crop

D. Barani crop

3386. Breeder seed is the progeny of_____________________?
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A. Nucleus seed

B. Certified seed

C. Foundation seed

D. Registered seed

3387. Which one of the following constitute the best defamation of fruit________________?
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A. A fruit is a product of flower

B. A fruit is post-fertilization product of the pistil

C. A fruit is a mature ovary that contain seed

D. A fruit is a product of ovary

3388. A region with an annual rain fall of less than 10 inches comes under_________________?
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A. Arid climate

B. Temperature

C. Semi arid climate

D. Wet climate

3389. Penetrometer are used for measuring__________________?
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A. Soil moisture

B. Soil seepage

C. Soil tilth depth

D. Soil compaction

3390. Certification is not required for________________?
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A. Certified seed

B. Nucleus seed

C. Breeder seed

D. Foundation seed

3391. When the course of water is blocked at some places if is called___________________?
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A. Dam

B. Head works

C. River

D. Lake

3392. The control and preservation of natural resources for present and future use is called_________________?
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A. None of above

B. Conservation

C. Crop residue management

D. Sustainability

3393. In Sunflower, production of foundation seed requires as isolation distance of__________________?
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A. 400 meters

B. 200 meters

C. 100 meters

D. 800 meters

3394. Allclopatluc interactions in general and the allelochemicals in particular are viewed as an important tool for_______________?
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A. Pest and insect management

B. Disease and pest management

C. Weed and pest management

D. non of these

3395. One of the plant introduced from new world to the old world is_________________?
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A. Sugarcane

B. Potato

C. Rice

D. Wheat

3396. Integrated pest management involves________________?
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A. Chemical and cultural method

B. Only chemical control method

C. Chemical, cultural, and biological method

D. Only biological method

3397. The pH of urea fertilizer is _________________?
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A. non of these

B. 8.0

C. 3.5

D. 4

3398. The ratio of actual cultivated area to a total farm area over the year is called __________________?
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A. Cropping intensity

B. Cropping pattern

C. Cost benefit ratio

D. Cropping system

3399. Breeders seed production is taken up from the nucleus seed B and A lines are pollinated in an isolation of 1 Km in a ratio of_________________?
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A. 1:02

B. 1:05

C. 1:4

D. 1:03

3400. Gassypium barbadense was developed from a cross between__________________?
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A. G. herbaceum and G. raimondii

B. G. hirsutum and G. raimondii

C. G. arborieum and G. raimondii