Crop Production and Management
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Agricultural Practices and Soil Preparation
SubtopicAgricultural Practices and Soil Preparation under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
The removal of unwanted plants from a field is known as:
A.Sowing
B.Tilling
C.Weeding
D.Harvesting
- 2.
Watering the soil before tilling is sometimes necessary because:
A.Dry soil is too hard to plough
B.Seeds need water to sleep
C.Microbes hate dry soil
D.Water makes the soil darker
- 3.
In modern times, most farmers prefer using a cultivator because it saves:
A.Soil and Water
B.Seeds and Manure
C.Labor and Time
D.Sunlight and Air
- 4.
Which of the following is a Rabi crop often used for oil extraction?
A.Soybean
B.Mustard
C.Cotton
D.Maize
- 5.
Which of the following is the correct order of agricultural steps?
A.Sowing -> Soil Preparation -> Irrigation
B.Soil Preparation -> Sowing -> Adding Manure
C.Harvesting -> Sowing -> Soil Preparation
D.Irrigation -> Harvesting -> Tilling
- 6.
Why is the topsoil the most important part for agriculture?
A.Because it is the hardest layer.
B.Because it contains no microbes.
C.Because only the top few centimeters support plant growth and contain nutrients.
D.Because it does not allow water to pass through.
- 7.
The main part of the plough is a long log of wood which is called the:
A.Ploughshare
B.Handle
C.Ploughshaft
D.Beam
- 8.
During soil preparation, the removal of 'weeds' is often a byproduct of tilling. Why are weeds specifically detrimental during the early growth stage of the main crop?
A.They provide too much shade to the soil
B.They compete for the same nutrients, water, and space, often outgrowing the young crop
C.They release oxygen which is toxic to the main crop
D.They make the soil too loose
- 9.
If a farmer skips the 'Leveling' step after ploughing, how will it most likely affect the 'Sowing' process using a seed drill?
A.The seeds will be sown too deep in all areas
B.The depth of seed placement will be inconsistent, leading to uneven germination
C.The seed drill will work faster
D.The seeds will turn into weeds
- 10.
What is the relationship between 'Soil Aeration' and 'Mineral Absorption' by roots?
A.Aeration has no effect on mineral absorption
B.Active transport of minerals by roots requires energy (), which is produced through aerobic respiration made possible by soil aeration
C.Aeration prevents minerals from dissolving in water
D.Aeration turns minerals into gases which roots cannot absorb
Download the worksheet for Crop Production and Management - Agricultural Practices and Soil Preparation to practice offline. It includes additional chapter-level practice questions.
Sowing and Selection of Seeds
SubtopicSowing and Selection of Seeds under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which of these factors is most important for a seed to germinate after it is sown?
A.High winds
B.Presence of moisture
C.Total darkness
D.Loud noise
- 2.
What is the common purpose of both traditional and modern sowing tools?
A.To irrigate the field
B.To harvest the grain
C.To place seeds into the soil
D.To crush the seeds
- 3.
When using a traditional sowing tool, where are the seeds placed first?
A.In the sharp pipes
B.In the funnel
C.Directly in the soil
D.Behind the bullocks
- 4.
Why is overcrowding of plants avoided by proper spacing during sowing?
A.To stop the plants from touching each other
B.To ensure each plant gets enough nutrients from the soil
C.To make the crop look green
D.To allow birds to walk between them
- 5.
In a school experiment, students sowed seeds in two pots. Pot A was kept in a refrigerator, and Pot B was kept at room temperature. Only Pot B seeds germinated. What does this prove about sowing?
A.Seeds need darkness to germinate.
B.Seeds require an appropriate temperature for germination.
C.Seeds do not grow in plastic pots.
D.Refrigerator air is poisonous to seeds.
- 6.
Why is the selection of 'clean and healthy' seeds considered the first step toward a good harvest?
A.Healthy seeds require less sunlight to grow.
B.Healthy seeds have a higher probability of germinating and resisting diseases.
C.Clean seeds prevent the soil from getting dirty.
D.Healthy seeds do not need to be sown in soil.
- 7.
A farmer notices that his crop is growing very densely in one corner of the field and very sparsely in another. What was likely the error during the sowing stage?
A.He used different types of seeds in different corners.
B.The seeds were not sown with uniform spacing.
C.He watered only one corner of the field.
D.The birds only ate seeds from the sparse corner.
- 8.
Which of these practices during the selection of seeds ensures 'genetic purity'?
A.Removing all seeds that are not of the specific variety intended for sowing (rogueing).
B.Washing the seeds in soapy water.
C.Painting the seeds with a specific color.
D.Sowing seeds from five different varieties in the same row.
- 9.
In a 'seed drill', why are the tubes usually made of flexible material or adjusted to be at an angle?
A.To allow the seeds to gain momentum so they hit the ground with force.
B.To accommodate the unevenness of the terrain while maintaining a constant flow of seeds.
C.To prevent the seeds from touching the metal, which would poison them.
D.To make the seed drill look more modern.
- 10.
Why is 'soil aeration' crucial immediately after sowing?
A.To allow nitrogen gas to enter the seed for protein synthesis.
B.To facilitate the exchange of gases for the high respiratory demand of the germinating embryo.
C.To keep the soil cool so the seed doesn't burn.
D.To help the wind blow the seeds into the right position.
Download the worksheet for Crop Production and Management - Sowing and Selection of Seeds to practice offline. It includes additional chapter-level practice questions.
Adding Manure and Fertilizers
SubtopicAdding Manure and Fertilizers under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Why is adding manure considered eco-friendly?
A.It uses chemicals
B.It uses waste materials and doesn't pollute water
C.It is made in factories
D.It kills all living organisms in soil
- 2.
Which of these provides the most humus to the soil?
A.NPK Fertilizer
B.Ammonium Sulphate
C.Cattle dung manure
D.Urea
- 3.
To maintain the fertility of the soil, we should substitute chemical fertilizers with ________.
A.More chemicals
B.Organic manure
C.Plastics
D.Sand
- 4.
Which of the following is an example of an organic fertilizer (manure)?
A.Urea
B.Potash
C.Compost
D.Superphosphate
- 5.
Why is manure considered more environmentally friendly than chemical fertilizers?
A.It is made of chemicals
B.It is biodegradable and prevents waste accumulation
C.It is very expensive
D.It cannot be dissolved in water
- 6.
Which chemical fertilizer is used to provide potassium to the soil?
A.Urea
B.Potash
C.Superphosphate
D.Ammonium sulphate
- 7.
The process of adding manure to the fields is called ________.
A.Manuring
B.Irrigation
C.Tilling
D.Harvesting
- 8.
How does the 'Time of Application' differ between manure and fertilizers for optimal crop growth?
A.Manure is applied during harvest; fertilizers are applied before sowing.
B.Manure is applied well before sowing to allow time for decomposition, while fertilizers are often applied in split doses during the growth stage.
C.Both must be applied at exactly the same time on the same day.
D.Fertilizers are applied years in advance.
- 9.
Which of the following correctly describes 'Composting'?
A.The process of extracting minerals from rocks for fertilizers.
B.The biological process of breaking down organic waste into simpler substances by microbes.
C.The chemical synthesis of urea in a factory.
D.The process of spraying pesticides on crops.
- 10.
A scientist finds that a field has very high levels of Phosphorus but very low Nitrogen. Which fertilizer should NOT be used to fix this specific imbalance?
A.Urea
B.Ammonium sulphate
C.Super phosphate
D.Ammonium nitrate
Download the worksheet for Crop Production and Management - Adding Manure and Fertilizers to practice offline. It includes additional chapter-level practice questions.
Irrigation Systems and Water Management
SubtopicIrrigation Systems and Water Management under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which source of irrigation carries water from a river to various fields through a network of narrow channels?
A.Pond
B.Canal
C.Lake
D.Well
- 2.
Which of the following is used in traditional irrigation but NOT in modern irrigation?
A.Pumps
B.Manual cattle labor
C.Pipes
D.Water
- 3.
How do plants obtain minerals from the soil?
A.They eat the soil
B.They absorb minerals dissolved in water
C.They get minerals from the air
D.They produce minerals through leaves
- 4.
Which of these sources involves digging deep into the ground to reach the water table?
A.Canals
B.Wells
C.Dams
D.Rivers
- 5.
Why is irrigation timing different for 'soil-to-soil'?
A.Because some soils are more expensive
B.Because different soils have different rates of water absorption and retention
C.Because some soils do not need water at all
D.Because some soils can produce water on their own
- 6.
In modern irrigation, what determines the selection between a sprinkler and a drip system?
A.The color of the pipes
B.The age of the farmer
C.The type of crop, water availability, and land topography
D.The number of animals available on the farm
- 7.
Which part of the plant is the primary entry point for water used in irrigation?
A.Leaves
B.Stem
C.Roots
D.Flowers
- 8.
In a 'Tensiometer' used for irrigation scheduling, what does a high vacuum reading indicate?
A.The soil is saturated with water
B.The soil is very dry and the plant roots have to exert more tension to pull water
C.The instrument is broken
D.The air pressure in the atmosphere is rising
- 9.
What is the 'Duty' of water in irrigation engineering?
A.The moral obligation of the farmer to save water
B.The area of land that can be irrigated with a unit volume of water flowing continuously
C.The weight of the water in a full canal
D.The cost of water per liter
- 10.
Why does 'Water-logging' often lead to a 'Nitrogen Deficiency' in the soil even if fertilizers were applied?
A.Water dissolves the nitrogen and turns it into gold
B.Anaerobic conditions promote 'Denitrification' where bacteria convert nitrates back into nitrogen gas ()
C.The water-logging causes the roots to excrete nitrogen
D.Nitrogen evaporates faster when the soil is wet
Download the worksheet for Crop Production and Management - Irrigation Systems and Water Management to practice offline. It includes additional chapter-level practice questions.
Protection from Weeds and Pests
SubtopicProtection from Weeds and Pests under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which of the following describes a weed correctly?
A.A plant that is purposely grown
B.An unwanted plant growing with a crop
C.A plant that provides manure
D.The main product of the farm
- 2.
Chemicals that are used to protect crops from diseases caused by fungi are:
A.Rodenticides
B.Fungicides
C.Weedicides
D.Fertilizers
- 3.
The physical removal of weeds includes:
A.Manual uprooting
B.Adding fertilizers
C.Irrigation
D.Threshing
- 4.
Which of these pests can destroy large areas of crops in a very short time?
A.Earthworms
B.Locusts
C.Butterflies
D.Snails
- 5.
Chemicals like Malathion and Disyston are examples of:
A.Weedicides
B.Insecticides
C.Fertilizers
D.Manures
- 6.
Which of the following is a physical barrier method to protect stored crops from pests like rats?
A.Using chemical sprays
B.Storing grains in airtight metallic bins or silos
C.Leaving the grains in the open field
D.Mixing grains with weeds
- 7.
If weeds are not removed before they flower, what is the most likely long-term problem?
A.The soil will become too dry
B.The weeds will produce seeds that infest the field for the next season
C.The crop will grow taller
D.The weedicide will become more effective
- 8.
A farmer decides to use 'Pre-emergent' herbicides. When must these be applied?
A.After the weeds have grown to 10 cm height
B.Before the weed seeds germinate and emerge from the soil surface
C.Only after the crop has been harvested
D.When the pests start eating the leaves
- 9.
What is the primary disadvantage of using 'Broad-spectrum' insecticides?
A.They are only effective against one type of insect
B.They kill both harmful pests and beneficial insects like pollinators and predators
C.They are too slow to show any results
D.They make the soil too blue in color
- 10.
In the chemical formula , the 'D' stands for 'Dichlorophenoxyacetic acid'. What does the '2,4' represent?
A.The number of days it takes to kill a weed
B.The position of Chlorine atoms on the phenoxy ring of the molecule
C.The ratio of weedicide to water for dilution
D.The year 1924 when it was first discovered
Download the worksheet for Crop Production and Management - Protection from Weeds and Pests to practice offline. It includes additional chapter-level practice questions.
Harvesting and Storage of Food Grains
SubtopicHarvesting and Storage of Food Grains under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Why should grains be cleaned before storage?
A.To make them look pretty
B.To remove dirt and prevent infestation
C.To make them heavier
D.To change their shape
- 2.
The festival of 'Pongal' is associated with the harvest of which crop in South India?
A.Wheat
B.Rice
C.Mustard
D.Gram
- 3.
In the context of agriculture, 'storage' refers to keeping grains safe until they are:
A.Harvested
B.Consumed or sold
C.Sown
D.Watered
- 4.
A machine used to cut the standing crop is called a:
A.Harvester
B.Sower
C.Plough
D.Sprinkler
- 5.
Which of these statements correctly differentiates between harvesting and threshing?
A.Harvesting is planting, while threshing is watering
B.Harvesting is cutting the crop, while threshing is separating the grain from the stalk
C.Harvesting is done by machines, while threshing is only done by hand
D.Harvesting involves wind, while threshing involves water
- 6.
Before storing grains in silos, what is the most important preparatory step a farmer takes?
A.Polishing the grains with oil
B.Sun-drying to remove moisture
C.Mixing the grains with sand
D.Washing the grains in cold water
- 7.
Which of the following is a physical factor that must be controlled during grain storage?
A.Rats
B.Insects
C.Temperature
D.Fungi
- 8.
What is the primary indicator used by farmers to determine if 'Bajra' (Pearl Millet) is ready for harvesting?
A.The appearance of a 'black layer' at the base of the grain, indicating that no more nutrients are entering the seed.
B.The total change of the leaf color from green to bright red.
C.The grain becomes soft and milky when pressed between the fingers.
D.The height of the plant doubles within a single week during the end of the season.
- 9.
Why is 'Bulk Storage' in silos considered more 'hygienic' than 'Bag Storage' in traditional warehouses?
A.Silos are easier to seal against rodents and birds, and they eliminate the risk of contamination from jute fibers.
B.Silos are made of silver, which has natural antibacterial properties.
C.In silos, the grains are constantly moving, which prevents germs from settling on them.
D.The high pressure inside the silo kills all the bacteria through a process of pasteurization.
- 10.
In the 'Threshing' of wheat, what is the role of the 'Concave'?
A.It acts as a stationary surface against which the rotating drum rubs the grain to detach it from the straw.
B.It is a fan that blows air to separate the grain from the chaff.
C.It is the sharp blade that cuts the standing crop in the field.
D.It is the storage tank where the cleaned grain is temporarily kept.
Download the worksheet for Crop Production and Management - Harvesting and Storage of Food Grains to practice offline. It includes additional chapter-level practice questions.
Food from Animals and Animal Husbandry
SubtopicFood from Animals and Animal Husbandry under Crop Production and Management for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which of the following products is obtained from the skin of animals like cows and buffaloes after they die?
A.Wool
B.Silk
C.Leather
D.Cotton
- 2.
In a beehive, where is the honey stored?
A.In the Queen's chamber
B.In hexagonal wax cells called honeycombs
C.In the drones' legs
D.Outside the hive
- 3.
To improve the quality and quantity of milk, farmers often use:
A.Better crop seeds
B.Selective breeding of animals
C.More pesticides
D.Artificial irrigation
- 4.
Which vitamin is specifically found in high amounts in fish liver oil?
A.Vitamin C
B.Vitamin K
C.Vitamin A
D.Vitamin B12
- 5.
Which of the following products is considered a primary source of animal protein in the human diet?
A.Cereals
B.Vegetables
C.Eggs
D.Fruits
- 6.
Which of the following is a common practice in animal husbandry to control the population of internal parasites like worms in cattle?
A.Artificial Insemination
B.Deworming
C.Cross-breeding
D.Culling
- 7.
In poultry, the period during which a hen sits on its eggs to provide warmth for hatching is called:
A.Lactation
B.Incubation
C.Gestation
D.Molting
- 8.
The disease 'Rinderpest' was once a major threat to cattle globally. What type of pathogen caused this disease?
A.Bacterium
B.Virus
C.Fungus
D.Protozoan
- 9.
In the process of honey extraction, why is a 'Honey Extractor' (centrifuge) preferred over squeezing the combs by hand?
A.It makes the honey taste sweeter
B.It allows the intact honeycombs to be reused by the bees
C.It removes the bee wax and mixes it into the honey
D.It kills the bacteria that might be present in the hive
- 10.
Which of the following mineral supplements is most critical for a hen to produce eggs with strong, unbreakable shells?
A.Iron
B.Calcium
C.Iodine
D.Potassium
Download the worksheet for Crop Production and Management - Food from Animals and Animal Husbandry to practice offline. It includes additional chapter-level practice questions.