agronomy Mcqs
201. The productive branches of cotton are called________________?
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A. Fruiting branches

B. Sympodial branches

C. Monopodial branches

D. non of these

202. Plants which grow on dry region are____________________?
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A. Thermophytes

B. Xerophytes

C. Haplophytes

D. Hydrophytes

203. genetic purity is assessed through________________?
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A. Germination

B. Inspection

C. Seed testing

D. All the a b c

204. On the basis of yield of cotton per hectare which of the following country occupies second position______________?
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A. Turkey

B. non of these

C. Pakistan

D. China

205. In wheat total crop P uptake per ton of gram is about;__________________?
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A. 5-7 Kg

B. 20-25 Kg

C. 5-20 Kg

D. 2-3Kg
206. AZR1 is___________________?
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A. Attock Zonal research institute

B. None of the above

C. Agriculture zonal research institute

D. Arid zone research institute
207. Gassypium barbadense was originated in__________________?
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A. Central and South America

B. Central and North America

C. Central and South Asia

D. North Mexico and North America

208. Ratio of economic yield to biological yield expressed in percentage is called_______________?
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A. Dry matter

B. Total yield

C. Seed index

D. Harvest index
209. Solar energy emitted by sun reaches the earth surface absorbed and returned back in the form of___________________?
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A. Infra red radiation

B. X rays

C. None of the above

D. Infra blue radiation

210. Effects of allelopathic compound in the life cycle of plants cause inhibition of________________?
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A. non of these

B. seed germination

C. Seed swelling

D. Seed deterioration

211. CCRI stands for_______________?
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A. Cotton crop research institute

B. Center for crop research institute

C. Central cotton research institute

D. non of these

212. The seed dormancy of rice seed can be broken by putting into the oven at____________________?
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A. none of the above

B. 53c for 6 hrs

C. 45c for 6 hrs

D. 50c for 5 hrs

213. A region with an annual rainfall less than 10 inches comes under_________________?
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A. And climate

B. Semi-and climate

C. None of the above

D. Wet climate

214. Simple plains that lack photosynthesis pigments are called as_________________?
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A. Virus

B. None of the above

C. Bacteria

D. Fungi
215. In Bindi, production of foundation seed needs an isolation distance of__________________?
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A. 50 meters

B. 200 meters

C. 100 meters

D. 3 meters

216. Best time of sowing for cotton is______________?
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A. non of these

B. Mid May to mid July

C. Mid March to mid April

D. Mid June to mid July

217. In pulses, for the production of nucleus seed we require minimum of_________________?
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A. 400 plant progenies

B. 300 plant progenies

C. 200 plant progenies

D. 500 plant progenies
218. 2,4-d is synthetic herbicide derived from_______________?
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A. Valine

B. Auxins

C. Cytokmins

D. Amino acid

219. On the basis of yield of cotton per hectare which of the following country occupies first position ?
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A. India

B. Australia

C. America

D. Pakistan

220. Seed rate of cotton per acre is________________?
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A. 5-6 kg

B. 10-22 kg

C. 14-21 kg

221. Fertilizer requirements of wheat under medium loamy soil is________________?
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A. 100-70 NP kg/ha

B. 110-60 NP kg/ha

C. 75-90 NP kg/ha

D. 136-85 NP kg/ha
222. Genus of cotton is___________________?
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A. Hirsutum

B. Gassypium

C. Triticum

D. Hordeunt

223. The major source of foreign exchange earning is________________?
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A. Cotton

B. Wheat

C. Jute

D. Sugarcane

224. The role of boron and zinc has been recognized in crop_________________?
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A. Mustard

B. None of these

C. Sugarcane

D. Rice
225. Allelocliemicals may enter in the soil through the process of_________________?
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A. Root exudation

B. Mass flow

C. Diffusion

226. In Raygistan area which districts of Sindh are included______________?
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A. Hyderabad and N.Shah

B. Sukkar and. Khairpur

C. Karachi

D. None of the above

227. Zinc deficiency is generally observed in_________________?
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A. Vegetables

B. Race

C. Cotton

D. Wheat

228. Soil water in excess of hygroscopic and capillary water which moves downward through the soil by the force of gravity is called______________?
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A. sub-surface water

B. Gravitational water

C. Capillary water

D. Run off water

229. High density grains are found mostly at___________________?
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A. All the above

B. Middle of panicle

C. Top of panicle

D. Bottom of panicle

230. Auxins and cytokinins are__________________?
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A. Herbicides

B. Fungicides

C. Growth regulators

D. Insecticides

231. Allelopathy interaction between plants playa crucial role in___________________?
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A. Ecosystems

B. Community

C. Both a and b

D. non of there

232. Seed rat of American cotton per acre is__________________?
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A. 10-12 kg

B. non of these

C. 6-8 kg

D. 15-18 kg

233. In wheat, production of certified seed needs an isolation distance of____________________?
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A. 4 Meters

B. 2 Meters

C. 5 Meters

D. 3 Meters
234. The experimental design which control fertility level in two directions is known as________________?
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A. RBD

B. LSD

C. SPD

D. AD

235. The allelochemicals are broadly classified as_______________?
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A. Phenolics and. terpenoids

B. Trytophan

C. non of there

D. Cytokinin and ethylene

236. Plants having no defined limits of vegetative and reproductive element is called______________?
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A. Absolute growth

B. Assimilation

C. Determinate growth

D. Indeterminate growth
237. Among the cotton exporting countries the number of China is________________?
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A. 4<sup>th</sup>

B. 2nd

C. 3<sup>rd</sup>

D. 1<sup>st</sup>

238. Mg in plants act as___________________?
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A. Protein activator

B. Enzyme activator

C. Starch activator

D. None of the above

239. Gaseous loss of a substance from the soil or from fertilizer or manure is called_________________?
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A. Evaporation

B. Evapotranspiration

C. Volatilization

D. Transpiration

240. Annual rye grass releases a chemical through its root that prevents________________?
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A. Crop seeds

B. weed seed

C. Both a and b

D. non of these

241. The ratio of treatment variance to error variance is known as_________________?
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A. I-value

B. Critical difference

C. F-value

D. Correlation

242. Ratio of crop yield to the amount of water utilized is called______________?
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A. Soil water use

B. Crop water use efficiency

C. Soil plant water relationship

D. Water intensity

243. Tillage is field operation which help in cutting, loosening and inverting the soil for_________________?
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A. Seed bed preparation

B. Transplantation

C. Irrigation

D. Fertilization

244. Root rot of cotton is a_________________?
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A. Fungal disease

B. Viral disease

C. Bacterial disease

245. The control and preservation of natural resources For present and future use is_________________?
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A. Environment

B. Biodiversity

C. Substainability

D. Conservation
246. The enzyme responsible for biological nitrogen fixation is________________?
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A. Lipase

B. Nitrogenase

C. Isomerase

D. Kinease

247. The actual amount H2O present in the air is called_____________?
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A. Relative humidity

B. Absolute humidity

C. Both A and B

D. non of these

248. Which one of the following is C4 plain_________________?
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A. Sugarcane

B. Make

C. All the above

D. Sorghum

249. One rooting hormone occurring naturally in plant is ___________________?
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A. Naphthalene acetic acid

B. Indolebutyric

C. None of the above

D. Indolacetic acid

250. Primary air polluted is________________?
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A. SO<sub>3</sub>

B. SO2

C. None

D. SO<sub>4</sub>