Multiple Choice Questions

IMPROVEMENT IN FOOD RESOURCES

Updated for CBSE 2027
80+ Practice Questions
Notes

Practice Questions with Answers

Total 80 questions available

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Q. 1
Find the odd one out.
A
Maize
B
Pigeon pea
C
Millets
D
Sorghum
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Q. 2
What is the primary process by which plants make food?
A
Respiration
B
Photosynthesis
C
Fermentation
D
Transpiration
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Q. 3
Determine the mineral nutrient/element whose loss is compensated by growing a pulse crop between two cereal crops.
A
Nitrogen
B
Sulphur
C
Calcium
D
Magnesium
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Q. 4
Which season is referred to as the 'kharif' season?
A
From November to April
B
From March to June
C
From July to December
D
From June to October
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Q. 5
Inland fishery refers to...
A
Culturing fish in freshwater bodies
B
Extraction of oil from fish
C
Deep sea fisheries
D
Capturing fish from sea coast
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Q. 6
What is a significant factor affecting storage losses in grains?
A
Excessive sunlight
B
High prices
C
Inappropriate moisture
D
Crop rotation
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Q. 7
What do vegetables, spices, and fruits mainly provide?
A
Fats
B
Carbohydrates
C
Proteins
D
Vitamins and minerals
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Q. 8
What is composting?
A
The process of mulching green plants into the soil
B
The decomposition of farm waste in pits
C
A method of applying fertilizers
D
A method of producing inorganic fertilizers
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Q. 9
What is organic farming?
A
A system that uses only inorganic fertilizers
B
A farming system that minimizes chemical use
C
A system that incorporates mixed cropping and crop rotation
D
A system that uses only bio-pesticides
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Q. 10
Green manuring increases the crop yield by:
A
80-90%
B
15-25%
C
30-50%
D
5-10%
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Q. 11
Which of the following combination of crop will give maximum yield in mixed cropping?
A
Wheat + millet
B
Wheat + maize
C
Oat + Rice
D
Wheat + peanut
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Q. 12
In mixed cropping, which two crops cannot be grown together?
A
Wheat and maize
B
Sorghum and pigeon pea
C
Maize and urad bean
D
Wheat and mustard
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Q. 13
What determines the cropping system and production practices for farmers?
A
The financial conditions of the farmer
B
Availability of information
C
Weather conditions
D
Access to technology
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Q. 14
Weeds affect the crop plants by
A
killing of plants in field before they grow
B
dominating the plants to grow
C
competing for various resources of crops (plants) causing low availability of nutrients
D
all of these
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Q. 15
What is an important factor for new crop varieties to be accepted?
A
If the crop variety is drought-resistant
B
If the crop resists biotic stresses
C
If the crop variety produces high yields under different conditions
D
If the crop variety responds to fertilizers
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Q. 16
Which of the following crops are grown in the rabi season?
A
Cotton and maize
B
Wheat and gram
C
Paddy and soyabean
D
Mustard and linseed
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Q. 17
What are fertilizers primarily used for?
A
To ensure good vegetative growth
B
To supply organic matter to plants
C
To provide organic matter
D
To supply nitrogen, phosphorus, and potassium
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Q. 18
How many nutrients that are essential for plant growth are supplied by soil?
A
Twelve
B
Thirteen
C
Sixteen
D
Six
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Q. 19
Green manure enriched soil in:
A
Carbon and oxygen
B
Nitrogen and sulphur
C
Nitrogen and phosphorus
D
Nitrogen and calcium
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Q. 20
Which preventive measure is taken before storing grains?
A
Ignoring cleanliness
B
Strict cleaning
C
Storing without treatment
D
Improper drying
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Q. 21
Which of the following is NOT a type of irrigation system mentioned?
A
Wells
B
Canals
C
Tanks
D
Sprinkler systems
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Q. 22
Which of the following nutrients are absorbed by plants in large quantities from soil?
A
Sulphur
B
Manganese
C
Iron
D
Zinc
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Q. 23
Which of the following nutrient is obtained from air by plants?
A
Phosphorus
B
Nitrogen
C
Oxygen
D
Potassium
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Q. 24
What is the process called when farm waste is decomposed by earthworms?
A
Green manure
B
Organic farming
C
Vermi-compost
D
Composting
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Q. 25
What is the primary dependence of agriculture in India?
A
Timely monsoons
B
Organic farming
C
Chemical fertilizers
D
Advanced machinery
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Q. 26
Which breed is an example of an Indian indigenous breed used in poultry farming?
A
Leghorn
B
White Plymouth Rock
C
Aseel
D
Rhode Island Red
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Q. 27
Developing crop varieties with wider adaptability will help in stabilizing crop production, because
A
that variety can be grown under same climatic conditions
B
that variety will have resistance to a wide variety of pests
C
a single variety can be grown under different climatic conditions in different regions
D
that variety will be higher yielding than many other varieties
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Q. 28
What is the function of manure in clayey soils?
A
To reduce water holding capacity
B
To improve drainage and prevent water logging
C
To retain moisture in the soil
D
To increase the soil's water retention capacity
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Q. 29
Which of the following is a weed?
A
Cowpea
B
Linseed
C
Sudan grass
D
Parthenium
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Q. 30
Which one of the following nutrients is not available in fertilizers?
A
Potassium
B
Iron
C
Nitrogen
D
Phosphorus
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Q. 31
Which method helps in increasing groundwater levels?
A
Chemical fertilizers
B
Rainwater harvesting
C
Mono-cropping
D
Pesticides
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Q. 32
Which of the following is incorrect for green manure?
A
It supplies organic matter
B
It prevents soil erosion
C
It allows leaching
D
It supplies nitrogen
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Q. 33
Pusa Lerma is an improved variety of:
A
Wheat
B
Soyabean
C
Rice
D
Maize
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Q. 34
What is the main purpose of crop rotation?
A
Increase crop prices
B
Prevent soil erosion
C
Promote monoculture
D
Optimize nutrient use
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Q. 35
Which of the following do not cause disease in plants?
A
Bacteria
B
Rats
C
Virus
D
Fungi
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Q. 36
Which of the following nutrients are supplied by air to plants?
A
Oxygen and hydrogen
B
Carbon and oxygen
C
Hydrogen and nitrogen
D
Nitrogen and phosphorus
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Q. 37
What is hybridisation in crop variety improvement?
A
Crossing between plants of the same variety
B
Crossing between genetically dissimilar plants
C
Crossing between genetically similar plants
D
Crossing plants from the same family
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Q. 38
How can we improve crop yield?
A
Fertilizer application
B
Crop variety improvement
C
Using traditional methods
D
Crop rotation techniques
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Q. 39
What are fodder crops used for?
A
Export purposes
B
Seed production
C
Livestock food
D
Human consumption
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Q. 40
Which of the following are oil seeds?
A
Sesame and castor
B
Wheat and rice
C
Vegetables and fruits
D
Pulses and cereals
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Q. 41
The system of culturing five or six species of fish with different food habits, in a fishpond, is called
A
composite fish culture
B
mariculture
C
capture fishing
D
pisciculture
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Q. 42
What is an intervarietal hybridisation?
A
Crossing between plants of different families
B
Crossing between different species of the same genus
C
Crossing between different varieties
D
Crossing between plants of the same genus
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Q. 43
What is manure composed of?
A
Inorganic plant nutrients
B
Inorganic fertilizers
C
Decomposed animal excreta and plant waste
D
Chemically synthesized nutrients
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Q. 44
Green manure refers to...
A
The organic manure prepared by green worms
B
The manure used by small green plants
C
The plants grown and mulched...
D
The organic manure added before ploughing
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Q. 45
The process of crossing genetically dissimilar plants of a species is called
A
intervarietal cross
B
interspecific cross
C
intergeneric cross
D
all of these
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Q. 46
Which of the following is not considered a primary nutrient for plants?
A
Phosphorus
B
Oxygen
C
Nitrogen
D
Potassium
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Q. 47
Continuous use of fertilizers can destroy soil fertility because
A
organic matter is not replenished
B
microbes in the soil are harmed
C
both (a) and (b)
D
None of the above
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Q. 48
What are macro-nutrients?
A
Nutrients required in small quantities
B
Nutrients required in large quantities
C
Nutrients required in trace amounts
D
Nutrients required in medium quantities
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Q. 49
How is vermi-composting different from regular composting?
A
It uses worms to accelerate decomposition
B
It uses mechanical processes for faster composting
C
It speeds up the plant growth process
D
It allows faster decomposition of chemicals
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Q. 50
Plants can be made disease-resistant by...
A
Hybridisation
B
Genetic modification
C
Both Hybridisation and Genetic modification
D
Use of antibiotics
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Q. 51
Which of the following is a common method of controlling pests?
A
Intercropping
B
Pesticides
C
Crop rotation
D
Hand-picking
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Q. 52
Choose the correctly matched pair.
A
Rabi crops - Mustard, Linseed, Wheat
B
Kharif crops - Wheat, Gram, Peas
C
White Revolution - Increased food-grain production
D
Green Revolution - Increased milk production
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Q. 53
What are weeds?
A
Pests affecting crops
B
Soil nutrients
C
Unwanted plants
D
Beneficial plants
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Q. 54
Application of nitrogenous manure to a plant causes:
A
Early flowering
B
Growth retardation
C
Early fruiting
D
Vigorous vegetative growth
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Q. 55
Why is a shorter maturity duration in crops beneficial?
A
It allows for better quality of produce
B
It allows for growing multiple crops in a year
C
It reduces the cost of crop production
D
It allows for uniform maturity, easing harvesting
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Q. 56
Catlas feed on the ______________ of the water body.
A
grasses/weeds
B
surface
C
middle zone
D
bottom zone
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Q. 57
What do pulses provide in our diet?
A
Fats
B
Proteins
C
Carbohydrates
D
Vitamins
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Q. 58
Find out the wrong statement from the following
A
White revolution is meant for increase in milk production
B
Blue revolution is meant for increase in fish production
C
Increasing food production without compromising with environmental quality is called as sustainable agriculture
D
None of the above
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Q. 59
Mixed cropping and intercropping involve growing two or more crops simultaneously on the same field; but the latter differs from the former in that
A
crops are provided with only organic manures and biofertilisers.
B
cropping is practiced along with rearing of animals.
C
it reduces risk and gives insurance against failure of crops.
D
the different crops are grown in different rows alternating with each other.
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Q. 60
Among the following which is not a macronutrient?
A
Nitrogen
B
Carbohydrates
C
Phosphorus
D
Sulphur
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Q. 61
What is a major benefit of mixed cropping in agriculture?
A
Increased risk due to dependence on multiple crops
B
Reduced risk and insurance against crop failure
C
Higher vulnerability to pests and diseases
D
Decreased overall nutrient utilization
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Q. 62
What is a desirable agronomic characteristic in fodder crops?
A
Dwarfness
B
Tallness
C
Profuse branching
D
Uniform maturity
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Q. 63
What is mixed cropping?
A
Planting crops in rows
B
Using a single crop
C
Growing different crops together
D
Growing crops in succession
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Q. 64
Among the following which is the major cause of crop failure in India?
A
Inadequate supply of fertilizers and manures
B
Soil conditions
C
Pest attack
D
Monsoon failure
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Q. 65
Choose the correctly matched pair.
A
Tanks - Receive water from reservoirs
B
River Lift Systems - Water from rivers
C
Dug wells - Water tapped from deeper strata
D
Tube wells - Water collected from strata
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Q. 66
Choose the correctly matched pair.
A
Catla - Surface feeder
B
Peneaus monodon - Fresh water prawn
C
Rohu - Bottom feeder
D
Apis mellifera - Indian bee
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Q. 67
Which of the following cannot be used in organic farming?
A
Farm-wastes
B
Herbicides
C
Crop rotation
D
Bio-pesticides
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Q. 68
What is a potential disadvantage of excessive fertilizer use?
A
It harms microorganisms and soil fertility over time
B
It improves soil fertility
C
It increases crop yield in the long term
D
It helps in better crop rotation
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Q. 69
How can genetically modified crops be developed?
A
By introducing a gene with the desired characteristic
B
By introducing biotic resistance
C
By breeding two similar plants
D
By crossing plants from different genera
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Q. 70
What is green manure?
A
Chemically synthesized plant nutrients
B
Green plants ploughed into the soil before sowing
C
The use of crop residues as fertilizers
D
The addition of organic matter to soil through irrigation
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Q. 71
Why are crop varieties with tolerance to high soil salinity useful?
A
Because they resist abiotic stresses like drought
B
Because soil salinity affects water availability for crops
C
Because it leads to higher yields
D
Because they reduce water requirements
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Q. 72
What is one desirable trait developed through cross-breeding in poultry farming?
A
Low maintenance requirements
B
High feather production
C
Increased water consumption
D
Reduced egg-laying capacity
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Q. 73
What is the purpose of developing crop varieties for wider adaptability?
A
It helps in stabilizing crop production
B
It allows farmers to plant in multiple soil types
C
It ensures crops survive drought and flood conditions
D
It allows for stable yields in different regions
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Q. 74
Which crops provide carbohydrates for energy requirements?
A
Vegetables and fruits
B
Cereals like wheat and rice
C
Pulses like gram and peas
D
Oil seeds like mustard
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Q. 75
Which irrigation system is more useful in areas where canal flow is insufficient or irregular?
A
Canal system
B
Tanks
C
River lift system
D
Wells
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Q. 76
What are photoperiods related to?
A
Water availability
B
Temperature levels
C
Soil quality
D
Duration of sunlight
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Q. 77
Which of the following is a factor considered for variety improvement?
A
To improve the oil quality of seeds
B
To improve soil salinity
C
To improve crop height
D
To increase disease resistance
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Q. 78
Genetically modified plants can be produced by transferring desired:
A
Cytoplasm
B
Carbohydrates
C
Genes
D
Proteins
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Q. 79
What type of pest damage involves sucking cell sap?
A
Leaf cutting
B
Sap-sucking
C
Stem boring
D
Root damage
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Q. 80
Which of the following is not a marine fish?
A
Sardines
B
Catla
C
Mackerel
D
Pomfret
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