Agri-MCQs #8: General Agronomy

1. The total geographical area of Pakistan is
* a. 79.64 million ha.
b. 60.50 million ha.
c. 200.5 million ha.
d. 150.0 million ha.

2. The cropped area in Pakistan is about
a. 5%
b. 10%
* c. 25%
d. 50%

3. In Pakistan the share of Agriculture in GDP is
a. 10%
* b. 25%
c. 40%
d. 50%

4. Pakistan earns about ________ of the foreign exchange. Through export of cotton, rice and other agriculture products.
a. 20%
b. 30%
c. 50%
* d. 80%

5. Our national food security is an issue of ————-
* a. Top priority
b. 2nd priority
c. 3nd priority
d. No priority

6. Water makes up of the fresh weight of green tissues.
a. 40-50%
b. 55-60%
c. 65-70%
* d. 85-95%

7. Shallow rooted plants require irrigation
a. Frequent
b. Heavy irrigation
c. Light irrigation
* d. Both a&b

8. Under field condition the conversion process of solar energy into chemical is ___________
a. 1-2%
b. 3-4%
c. 4-5%
d. 5-6%

9. The concentration of atmospheric CO2 is increasing @
* a. 1.5 µ mol mol-1 yr-1
b. 0.5 µ mol mol-1 yr-1
c. 2.5 µ mol mol-1 yr-1
d. 3.5 µ mol mol-1 yr-1

10. Increasing atmospheric O2 concentrations are expected to __________ plant production
* a. Increase
b. Decrease
c. No effect
d. None of the above

11. Seed priming is due to improve ___________
a. Seed maturity
b. Seed setting
* c. Seed germination
d. Seed vigour

12. The main rabi season crop of Pakistan is __________
a. Grain
b. Miaze
* c. Wheat
d. Barley

13. _________ is known as king of fodders
a. Alfalfa
* b. Berseem
c. Jantar
d. Sorghum

14. According to Hopkins Bioclimatic Law:-
Crop production activities (planting, harvesting etc)
and specific morphological development are delayed by h _____________ for each 1o latitude, 5o longitude and 12 meter of altitude.
a. 2 days
* b. 4 days
c. 6 days
d. 8 days

15. In Pakistan monsoon rainy sesason begins in ______
a. Early May
b. Mid June
* c. Mid July
d. Late December

16. The future food security depends on _____
* a. Sustainable agriculture
b. Organic farming
c. Genetic engineering
d. Diversified farming

17. For secondary tillage implements ______ is used
a. Sub soiler
b. Mould bold plough
c. Disc plough
* d. Cultivator

18. Loose smut is common disease of ______
a. Sugarcane
b. Cotton
* c. Wheat
d. Sorghum

19. In Pakistan the area under forest is __________
* a. 2.5%
b. 5%
c. 7%
d. 25%

20. The effective precipitation must penetrate to depth of ________ in soil
a. 1-5 cm
b. 5-7 cm
c. 8-9 cm
* d. 10-12 cm

21. Legume plants fix atmospheric _____________
* a. Nitrogen
b. Phosphorus
c. Potash
d. Sulpher

22. Meteorology is the science of ____________
* a. Atmosphere
b. Crop production
c. Soil management
d. Water management

23. Humid areas receives rainfall more than _________
* a. 1000 mm
b. 500 mm
c. 300 mm
d. 200 mm

24. The underground water table is declining @ _______
* a. 20 cm per year.
b. 30 cm per year.
c. 40 cm per year.
d. 50 cm per year.

25. The movement of water from roots to leaves of plants takes place through _________
a. Phloem
* b. Xylem
c. Stomata
d. None of the above

26. Soils irrigated by tubewell water only faces the deficiency of ____________
a. Phosphorus
b. Nitrogen
* c. Potash
d. Sodium

27. In rice growing tract the common crop rotation
a. Rice-sugarcane
b. Rice-cotton
* c. Rice-wheat
d. Rice-maize

28. Tillering is a critical stage in ________
a. Cotton
b. Berseem
c. Wheat
d. Maize

29. Mulching is done to control ________
a. Weeds
b. Evaporation of water
c. Soil erosion
d. All above

30. Bio-herbicides are used to control
a. Pests
b. Insects
c. Rodents
d. Weeds

31. The most available soil water to crops is ________
a. Hydroscopic water
b. Gravitational water
c. Capillary water
d. All above

32. The end product of organic matter is
a. Amino acid
b. Humers and CO2
c. H+, OH-
d. Soil

33. The average temperature for maximum plant growth is
a. 20-30 Co
b. 25-35 Co
* c. 28-30 Co
d. 25-30 Co

34. In Indus river main source of water is ____________
a. ppt
* b. Ice melt
c. Rainfall
d. All of these

35. G MOS stand for
* a. Genetically modified organisms
b. Genetically modified organs
c. Generally modified organisms
d. None of the above

36. In Pakistan the contribution of barani area in total wheat production is _____
a. 5%
b. 8%
* c. 12%
d. 20%

37. Tillage operation such as ____________ can be done on contours
a. Ploughing
b. Discing
c. Harrowing
d. All above

38. Wheat is _____________ in mature
a. Xerophytic
b. Hydrophytic
* c. Mesophuzte
d. None of the above

39. Water use efficiency can be improved by
a. Adapted cultivars
b. Appropriate fertility level
c. Effective weed control
* d. All of the above

40. In Pakistan total annual water flows in Indus Rivers System is _________
a. 100 MAF
* b. 140 MAF
c. 160 MAF
d. 180 MAF

41. In Pakistan water availability per person per annum is
a. 5300 m3
* b. 1000 m3
c. 600 m3
d. 1700 m3

Q.1. Select the best option/answer and fill in the appropriate box on the Answer Sheet. (20)

(i) Wheat inflorescence is called as:

(a) Spike

(b) Panicle

(c) Spadix

(d) Cymose

(e) None of these

 

(ii) Soil structure can be improved with the addition of:

(a) Chemical fertilizer

(b) Gypsum

(c) Lime

(d) Organic matter

(e) None of these

 

(iii) Humidity is measured by means of:

(a) Luxmeter

(b) Anemometer

(c) Psychrometer

(d) Thermometer

(e) None of these

 

(iv) When soil surface is protected/covered with residue of a crop, the practice is called?

(a) Sheet erosion

(b) Nitrogen fixation

(c) Tillage

(d) Mulching

(e) None of these

 

(v) Which of the following is not a fruit?

(a) Tomato

(b) Potato

(c) Pumpkin

(d) Melon

(e) None of these

 

(vi) Which one of the following is a good source of protein?

(a) Wheat

(b) Maize

(c) Pulses

(d) Meat

(e) None of these

 

(vii) The vector of cotton leaf curl virus in Pakistan is considered as:

(a) Jassid

(b) Aphid

(c) Pink boll worm

(d) White fly

(e) None of these

 

(viii) In genetics the appearance of an attribute of living organism is termed as:

(a) Dominant

(b) Phenotype

(c) Recessive

(d) Genotype

(e) None of these

 

(ix) Rhizobium belongs to:

(a) Nitrogen fixing bacteria

(b) Amonifying bacteria

(c) Nitrifying bactyeria

(d) Denitrifying bacteria

(e) None of these

 

(x) In DNA, adenine always pairs with:

(a) Guanine

(b) Thymine

(c) Uracil

(d) Cytosine

(e) None of these

 

(xi) Insects have:

(a) 4 legs and 2 wings

(b) 8 legs and 4 wing

(c) 6 legs and 4 wings

(d) 4 legs and 4 wings

(e) None of these

 

(xii) Tikka disease is major pathogenic threat in:

(a) Wheat

(b) Apple

(c) Sorghum

(d) Groundnut

(e) None of these

 

(xiii) Food and Agriculture Organization (FAO) has its headquarters in:

(a) Washington

(b) Geneva

(c) Rome

(d) Paris

(e) None of these

 

(xiv) Soil salinity can be rectified with:

(a) Urea

(b) Ammonium Sulphate

(c) Sodium Chloride

(d) Gypsum

(e) None of these

 

 

(xv) Safflower is an:

(a) Oil producing plant

(b) Ornamental plant

(c) Leguminous plant

(d) Fibre producing plant

(e) None of these

 

 

(xvi) Banana fruit is classified in the category of:

(a) Berry

(b) Pomes

(c) Stone fruit

(d) Drupe

(e) None of these

 

 

(xvii) Ploidy level of maize plant is:

(a) Monoploid

(b) Diploid

(c) Haploid

(d) Tetraploid

(e) None of these

 

 

(xviii) Gypsum is rich source of:

(a) Calcium + Zinc

(b) Calcium + Potassium

(c) Calcium + Sulpher

(d) Calcium + Nitrogen

(e) None of these

 

 

(xix) Gossypium hirsutum is the botanical name of:

(a) Rice

(b) Maize

(c) Sugarcane

(d) Cotton

(e) None of these

 

(xx) Olericulture is the study dealing with:

(a) Honey bee

(b) Rearing of silk worms

(c) Vegetable production

(d) Growing ornamental flowers

(e) None of the above

Top 10 viral plant diseases

  1. TOBACCO MOSAIC VIRUS (TMV)
  2. TOMATO SPOTTED WILT VIRUS (TSWV)
  3. TOMATO YELLOW LEAF CURL VIRUS (TYLCV)
  4. CUCUMBER MOSAIC VIRUS (CMV)
  5. POTATO VIRUS Y (PVY)
  6. CAULIFLOWER MOSAIC VIRUS (CaMV)
  7. AFRICAN CASSAVA MOSAIC VIRUS (ACMV)
  8. PLUM POX VIRUS (PPV)
  9. BROME MOSAIC VIRUS (BMV)
  10. POTATO VIRUS X (PVX)

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