agronomy Mcqs
151. Pakistan has a total forest area of about_________________?
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A. 22 million ha

B. 20 million ha

C. 32 million ha

D. 12 million ha
152. The cotton plant sheds more fruits mainly due to_________________?
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A. Higher dose of fertilizer

B. Higher temperature

C. Insects and pest

D. More number of irrigations

153. The application of fertilizer nutrients in proportions best suited to the needs of the crop is called_________________?
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A. fertilizer use efficiency

B. Nitrogen use efficiency

C. fertilizer placement

D. Balanced fertilization
154. The root of cotton plant goes up to depth of_________________?
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A. 8-10 ft

B. non of these

C. 4-6 ft

D. 2-3 ft

155. Who showed a positive correlation between tetrazolium staining with seed quality in soybean seeds ?
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A. Maguire (1963)

B. Woodstock (1976)

C. Barries ei al. (1969)

D. Moore (1973)

156. A long severe winter and short summer is called_________________?
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A. Semi arctic

B. Arctic

C. Sub-temperature

D. Semiarid

157. On the basis of season cotton is a__________________?
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A. Kharif crop

B. Rabi crop

C. Zaid Kharif crop

158. Sowing seed without any tillage in the soil is called__________________?
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A. None of the above

B. Zero tillage

C. Secondary tillage

D. Minimum tillage

159. Number of crops grown on the same piece of land in a year and expressed in percentage is known as_______________?
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A. Cropping pattern

B. Crop rotation

C. Cropping index

D. Cropping intensity

160. Plants which change from the vegetative to the reproductive stage by producing flowers and fruits when the day become longer is called________________?
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A. Photoperiod

B. Long day plants

C. Phototropism

D. Short day plants

161. The movement of water in soil profile is.known as__________________?
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A. Percolation

B. Absorption

C. All the above

D. Diffusion

162. One hectare is equal to___________________?
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A. 1.71 acre

B. 1.9 acre

C. 3.47 acre

D. 2.471 acre
163. Indus river is one of the longest river of Asia measuring about_____________________?
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A. 2500 Km

B. 3000 Km

C. 3200 Km

D. 2900 Km
164. Sunflower is allelopathic crop to many____________________?
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A. None of the above

B. Microorganisms

C. Weeds
165. Fertilizer application before seed sowing is called__________________?
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A. Basal application

B. Drilling

C. Broadcasting

D. Top dressing

166. The herb plants have___________________?
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A. All the above

B. Woody stem

C. Non-woody stem

D. Trunk

167. Prescribed germination percentage of foundation seed of ground nut is_________________?
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A. 70

B. 85

C. 90

D. 20

168. Drip method of irrigation is not suitable to close spaced crops because_________________?
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A. High water requirements

B. High cost on pipes

C. High pump pressure

D. Unavailable of technology

169. Foliar application of nitrogen means applying nitrogen in solution form to___________________?
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A. Flowers only

B. Whole plant

C. Stem only

D. Leaves
170. IPM stands for_________________?
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A. Integrated pest management

B. Interior pest management

C. International pest management

D. non of there

171. When crop plants adopt to a new environment are called___________________?
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A. Domestication

B. Accaumatization

C. Selection

D. Introduction

172. PASSCO stands for_______________?
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A. non of these

B. Pakistan Agriculture Service Supplies Corporation

C. Pakistan Agriculture Sugar Supplies Corporation

D. Pakistan Agriculture Seed Supplies Corporation
173. In countrys GDP, the cotton accounts for_________________?
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A. 10.15%

B. 2%

C. 2%

D. 5%

174. N mineralization is effected by soil pH_______________?
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A. None of the above

B. Above 10

C. Above 6

D. Below 6

175. The best soil for cotton cultivation is_________________?
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A. Silty soil

B. Clay loam soil

C. Loamy soil

D. Sandy soil

176. The series of transformation which a nutrient undergoes in the biosphere before returning to its original formed is called_______________?
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A. None of the above

B. Carbon cycle

C. Nutrient cycle

D. Nitrogen cycle

177. The Indus basin irrigation system has__________________?
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A. 19 Barrages

B. 25 Barrages

C. 11 Barrages

D. 41 Barrages

178. A nutrient element is said to be essential if___________________?
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A. Plants can not complete their life cycle in absence of that element

B. Deficiency symptoms can be removed by application of that putrid

C. All the above

D. Nutrients has some physiological function in metabolism of plant

179. The crops which are grown to reduce the soil erosion and natural losses by leaching is known as______________?
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A. Companion crops

B. Cover crops

C. Mixed crops

D. Ratooning crops

180. Part of embryonic axis which develops into root is called___________________?
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A. Coleorluza

B. Coleoptile

C. Radicle

D. Plumule

181. In 1992-93 the greatest decrease in the production of cotton was due to attack of_____________?
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A. Spotted boll worm

B. American boll worm

C. Aphids

D. CLCV
182. A gas produced by anaerobic decomposition of organic compounds is called as_________________?
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A. CO<sub>2</sub>

B. Ethane

C. Ammonia

D. Methane
183. The crop which are cultivated for grain purposes are called_________________?
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A. Fodder crops

B. Cereal crops

C. Fiber crops

D. Leguminous crops

184. The leguminous plants are important in agriculture because_________________?
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A. Help in nitrogen economy of nature

B. Six crops are harvested in a year

C. They are disease resistant

D. They need very little water to grow

185. The total dry matter produced by a plant as a result of photosynthesis is called_________________?
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A. Biological yield

B. Crop growth

C. Harvest index

D. Dry matter

186. The depth of water required by crops during the base period is called_____________________?
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A. Duty of water

B. Frequency of water

C. Delta of water

D. Acre inch

187. The systematic arrangement of soil in to groups or categories is called_________________?
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A. Classification

B. Perennials

C. Annuals

D. Ranking

188. CLCV stands for__________________?
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A. cotton leaf curl virus

B. Cotton leaf cover virus

C. cotton leaf cotton virus

D. cotton leaf complete virus

189. The K is predominantly in______________?
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A. All the above

B. Straw

C. Leaves

D. Grain

190. Hitting the seed with force against a hard surface to break seed dormancy is called_______________?
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A. Stratification

B. Impaction

C. Scarification

D. Abrasion

191. The contact herbicides are less effective to_________________?
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A. Perenial plants

B. Broad leaved weeds

C. All the above

D. Seasonal plants

192. The available form of nitrogen for plants is_________________?
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A. NO<sub>3</sub>

B. NH<sub>4</sub>

C. Both a and b

D. non of these

193. Excess of nitrogen to plants causes_________________?
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A. Delay in ripening

B. Delay in germination

C. All the above

D. Delay in growth

194. Main reason behind the shedding of flower in cotton is__________________?
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A. Cloudy day

B. High temperature

C. Low temperature

D. Humidity

195. Dwarf varieties of wheat are more resistance to_______________?
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A. Insect pest

B. Lodging

C. Viruses

D. Disease

196. Conducting experiments in glasses is called________________?
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A. In-sin

B. Invivo

C. Invitro

D. In-ova

197. The amount of water required to rise a crop to matunty with in a given period of time is called________________?
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A. Water balance

B. Crop Water requirement

C. Water depletion

D. Water frequency

198. The value of regression and correlation is the same when the correlation between two variables is_________________?
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A. Imperfect

B. Negative

C. Perfect

D. Positive

199. A method of control of pests in which natural predators and parasites are used without causing serious adverse environmental side effects is called_________________?
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A. Chemical control

B. Allelopathy

C. IPM

D. Insect control

200. Allelopathy is an important component in the development of future integrated strategies for____________?
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A. non of these

B. Soil management

C. Weed management

D. Water management