Agronomy Dryland Farming and Agroforestry Solutions
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Question No. 1
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What does Evapo-transpiration (ET) refer to?
A.
Only transpiration from leaves
B.
Condensation on plant surfaces
C.
Evaporation from soil and transpiration from plants
D.
Only evaporation from water bodies
Question No. 2
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Approximately what percentage of rainfall is lost through evaporation in dry land agriculture?
A.
10-20%
B.
60-70%
C.
30-40%
D.
80-90%
Question No. 3
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Which practice can reduce ET losses in crops?
A.
Enhancing plant density
B.
Increasing fertilizer applications
C.
Using mulches, antitranspirants, and wind breaks
D.
Using high-pressure irrigation
Question No. 4
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What is an anti-transpirant?
A.
A material applied to plant surfaces to reduce transpiration
B.
A pesticide that prevents insect damage
C.
A soil conditioner that retains water
D.
A growth stimulant that increases photosynthesis
Question No. 5
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What is a major drawback of using anti-transpirants excessively?
A.
They increase evaporation from the soil
B.
They promote excessive leaf growth
C.
They cause waterlogging
D.
They reduce photosynthesis
Question No. 6
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Which type of anti-transpirant works primarily by closing stomata?
A.
Film forming type
B.
Growth retardants
C.
Reflecting type
D.
Stomata closing type
Question No. 7
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Which type of anti-transpirant forms a thin film on the leaf surface acting as a physical barrier?
A.
Growth retardants
B.
Reflecting type
C.
Stomata closing type
D.
Film forming type
Question No. 8
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Which type of anti-transpirant reflects radiation to reduce leaf temperature?
A.
Reflecting type
B.
Growth retardants
C.
Film forming type
D.
Stomata closing type
Question No. 9
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Which anti-transpirant type reduces shoot growth and increases root growth to help plants resist drought?
A.
Stomata closing type
B.
Growth retardants
C.
Film forming type
D.
Reflecting type
Question No. 10
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Which chemical is an example of a stomata closing anti-transpirant?
A.
Mobileaf
B.
Cycocel (CCC)
C.
Phenyl mercuric acetate (PMA)
D.
Kaolin
Question No. 11
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Which of the following is an example of a film forming anti-transpirant?
A.
Phenyl mercuric acetate (PMA)
B.
Kaolin
C.
Mobileaf
D.
Cycocel (CCC)
Question No. 12
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Application of 5% kaolin is used as an example of which anti-transpirant type?
A.
Film forming type
B.
Reflecting type
C.
Stomata closing type
D.
Growth retardants
Question No. 13
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Which anti-transpirant is classified as a growth retardant?
A.
Cycocel (CCC)
B.
Mobileaf
C.
Atrazine
D.
Kaolin
Question No. 14
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What is the primary function of wind breaks?
A.
To break the wind flow and reduce wind speed
B.
To enhance water infiltration
C.
To increase soil fertility
D.
To reflect sunlight from crop surfaces
Question No. 15
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What are shelterbelts?
A.
Artificial barriers made of plastic sheets
B.
Irrigation channels designed to reduce wind
C.
Rows of trees or shrubs planted across wind direction to protect crops
D.
Rows of tall crops to block sunlight
Question No. 16
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How do wind breaks reduce the impact of wind on crops?
A.
By increasing ambient humidity
B.
By absorbing excess soil moisture
C.
By decreasing wind speed through physical obstruction
D.
By reflecting solar radiation
Question No. 17
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To what extent can shelterbelts provide protective shelter on the leeward side?
A.
Only adjacent to the wind break
B.
Up to 30 times the height of the tall tree
C.
Up to 5 times the height of the tree
D.
No protection is provided on the leeward side
Question No. 18
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How far does the protective effect extend on the windward side of wind breaks?
A.
Up to 30 times the tree height
B.
5-10 times the height of the tall tree
C.
Only at the base of the structure
D.
1-2 times the height of the tree
Question No. 19
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What is agro-forestry?
A.
An exclusively timber production system
B.
A technique to maximize monoculture yields
C.
A sustainable land management system combining crops, trees, and sometimes animals
D.
A method of intensive chemical fertilization in orchards
Question No. 20
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Which system in agro-forestry includes fish production along with agriculture and forestry?
A.
Agro-sylvo-pastoral system
B.
Agri-silvi-aquaculture system
C.
Agri-horti-silvicultural system
D.
Agri-silviculture
Question No. 21
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What effect do growth retardants have on plant morphology?
A.
They increase shoot growth at the expense of root development
B.
They uniformly increase both shoot and root growth
C.
They have no effect on plant morphology
D.
They reduce shoot growth and increase root growth
Question No. 22
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What is the function of film forming anti-transpirants?
A.
To create a thin physical barrier that reduces water loss
B.
To increase leaf surface temperature
C.
To stimulate rapid cell division in leaves
D.
To close stomata directly
Question No. 23
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Why is the use of anti-transpirants limited in field crops under normal conditions?
A.
Because they reduce photosynthesis, risking crop survival under severe moisture stress
B.
Because they increase transpiration under optimal moisture conditions
C.
Because they cause an increase in pest infestations
D.
Because they are too expensive to apply
Question No. 24
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What is the primary reason for using mulches in dryland farming?
A.
To increase fertilizer absorption
B.
To reduce evaporation and conserve soil moisture
C.
To enhance rapid plant growth
D.
To facilitate wind erosion
Question No. 25
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How does excessive wind impact dryland farming?
A.
It improves soil fertility
B.
It enhances soil moisture retention
C.
It causes wind erosion and increases evaporation
D.
It increases crop resistance to drought
Question No. 26
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If a farmer uses an anti-transpirant incorrectly, what might be a consequence?
A.
Enhanced plant photosynthesis
B.
Reduced water loss but also reduced photosynthesis
C.
Increased soil erosion
D.
Faster plant maturity
Question No. 27
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Why is agro-forestry beneficial for dryland areas?
A.
It increases evaporation and reduces soil moisture
B.
It enhances biodiversity and improves soil conservation
C.
It replaces food crops with only tree plantations
D.
It promotes monoculture farming
Question No. 28
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What is the primary difference between wind breaks and shelterbelts?
A.
Wind breaks are temporary, while shelterbelts are permanent
B.
Wind breaks reduce wind speed, while shelterbelts block rainfall
C.
Shelterbelts consist of multiple rows of trees, while wind breaks are single rows
D.
Wind breaks promote evaporation, while shelterbelts prevent soil erosion
Question No. 29
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What would happen if agro-ecological zones were ignored in regional farming planning?
A.
Crops would thrive regardless of climate
B.
Farming efficiency would improve
C.
Mismatch between crops and climatic conditions would occur
D.
Yield would increase in all cases
Question No. 30
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If the moisture availability index (MAI) falls below 0.3, what does it indicate?
A.
Excess moisture is available
B.
Moderate soil moisture level
C.
Severe moisture deficiency and drought risk
D.
Balanced soil moisture conditions
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