AGR-102 (2+1+1) Introductory Agrometeorology & Climate Change Question Paper for Agriculture

UNIVERSITY OF AGRICULTURAL SCIENCES, DHARWAD

UNIVERSITY EXAMINATION CENTER, DHARWAD

Final External Examination

Course: AGR-102 (2+1+1)
Title: Introductory Agrometeorology & Climate Change

I-Year B.Sc. (Agri.)
Semester: II (2016–17)
Date: 08-07-2017
Duration: 2 Hours
Marks: 50

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PART – A

Q.I Choose the most appropriate answers from the given choices

(0.5 × 25 = 12.5)

1. A state or condition of atmosphere at a given place and at a given time is called as
   a. Agro-meteorology
   b. Weather
   c. Meteorology
   d. Climate

2. Nitrogen concentration in the atmosphere on volume basis is
   a. 78.09%
   b. 20.95%
   c. 0.033%
   d. 79.30%

3. Atmosphere is divided into different layers based on
   a. Horizontal temperature difference
   b. Vertical temperature difference
   c. Vertical pressure difference
   d. Horizontal pressure difference

4. The lower layer of the atmosphere is called as
   a. Mesosphere
   b. Tropopause
   c. Troposphere
   d. Stratosphere

5. Ozone layer present in ______ atmospheric layer
   a. Troposphere
   b. Mesosphere
   c. Stratosphere
   d. Ionosphere

6. Solar radiation is received on the earth surface in the form of
   a. Radiation
   b. Electromagnetic waves
   c. Magnetic waves
   d. Conduction

7. Solar constant is equal to
   a. 1.94 cal/cm²/min
   b. 2.0 Langley
   c. 2.5 cal/cm²/min
   d. Both A and B

8. Total Standard Meteorological Weeks in a year
   a. 54
   b. 50
   c. 48
   d. 52

9. One rainy day means
   a. >2.5 mm rainfall/day
   b. <2.5 mm rainfall/day
   c. >2.5 cm rainfall/day
   d. <2.5 cm rainfall/day

10. The portion of radiation involved in photosynthesis in plants is called as
    a. PAR
    b. EMR
    c. Infra-red
    d. UV

11. Solar radiation that is reflected without any change in its quality is called as
    a. PAR
    b. Albedo
    c. EMR
    d. Both A and B

12. Thermal radiation emitted by the earth is in the form of
    a. PAR
    b. Infra-red

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(Continuation – Page 2)

13. International Standard Unit for measurement of solar radiation is
    a. Watts/m²
    b. Joule
    c. Cal/cm²/min
    d. Lux

14. The instrument that is used to measure total incoming radiation is
    a. Anemometer
    b. Lux
    c. Pyranometer
    d. Thermometer

15. The normal lapse rate in the atmosphere is
    a. 10°C/km
    b. 6.5°C/km
    c. 15°C/km
    d. None of the above

16. The transfer of heat by molecular activity is called as
    a. Radiation
    b. Conduction
    c. Convection
    d. None of the above

17. Sunshine recorder is used to estimate
    a. Intensity of solar radiation
    b. Amount of solar radiation
    c. Sunshine hours
    d. Both A and B

18. Instrument used to measure surface temperature of plants without contact is
    a. Minimum thermometer
    b. Maximum thermometer
    c. Dry bulb
    d. Infra-red thermometer

19. The horizontal motion of air is called as
    a. Wind
    b. Horizontal motion
    c. Wind direction
    d. None of the above

20. Instrument used to indicate wind direction is
    a. Cup anemometer
    b. Pyranometer
    c. Balloon
    d. Wind vane

21. The instruments used for measuring relative humidity are called as
    a. Psychrometers
    b. Hygrometers
    c. Pyranometer
    d. Both A and B

22. The difference between saturation vapour pressure and actual vapour pressure is called as
    a. Vapour pressure deficit
    b. Relative humidity
    c. Specific humidity
    d. Both A and B

23. ______ is a unit of measurement used to describe the amount of cloud cover at any given location
    a. Cloud Atlas
    b. Cloud cover
    c. Okta
    d. Both A and B

24. The rain bearing clouds are
    a. Cirrus
    b. Cirro-cumulus
    c. Cirro-stratus
    d. Cumulo-nimbus

25. June–September rainfall is called as
    a. N-E Monsoon
    b. Summer Rainfall
    c. S-W Monsoon
    d. All the above

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Q.II State whether the following statements are TRUE or FALSE

(0.5 × 15 = 7.5)

26. Atmosphere extended up to a height of 1600 km from the Earth’s surface

27. Photosynthetically active radiation is measured with quantum sensors

28. Infra-red radiation is detrimental to plant and animal health

29. Maximum temperature in a day is recorded at 12.00 noon

30. Wind always moves from a high pressure area to a low pressure area

31. Wind velocity is measured by cup anemometer

32. Humidity refers to water vapour content in the atmosphere

33. If water droplets completely evaporate before reaching the ground is called as drizzle

34. USWB open pan evaporimeter is used to measure evaporation

35. The relative humidity inside the room is measured by hair hygrometer

36. Response of plants to day length is known as thermoperiodism

37. Sun loving plants are called as heliophytes

38. Boiling temperature of water is 373°K

39. Lines joining the places of equal atmospheric pressure on the map is called as isobars

40. Knot is a unit for measurement of intensity of solar radiation

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Q.III Match the following

(0.5 × 10 = 5.0)

A	B
41. Doldrums	A. Season
42. Monsoon	B. Climate within crop canopy
43. Torricelli	C. Pune
44. Climate	D. University level
45. Microclimate	E. Barometer
46. IMD	F. Line joining equal temperature
47. B type observatory	G. Greek word ‘Klima’
48. Isotherms	H. Low pressure area in equator
49. Isohyets	I. Contains 85% atmospheric mass
50. Troposphere	J. Line joining equal rainfall

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PART – B

Q.IV Define or answer the following in one or two sentences

(1 × 5 = 5.0)

1. NCMRWF

2. Cyclone

3. Agro-meteorology

4. Lapse rate

5. Relative humidity

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Q.V Write short note (Any Five)

(2 × 5 = 10.0)

1. Climate change

2. Heat and cold wave

3. Drought

4. Weather forecasting

5. Cloud types

6. Wind types

7. Types of precipitation

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Q.VI Answer the following questions (Any Two)

(5 × 2 = 10.0)

1. Write in brief about causes for climate change and its impact on agriculture

2. Write in brief about origin of South-West monsoon

3. Write in brief about artificial rain making

4. Write in brief about classification of atmosphere based on vertical temperature difference with neat diagram

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