Basic principles, scope and importance of crop protection Part 1
Time Left
--:--:--
A-
A+
Switch Full Screen
Question No. 1
Marks
+1
-0
Time
0:00
☰
What is the primary goal of crop protection?
A.
To enhance the nutritional value of crops
B.
To maximize the use of chemical fertilizers
C.
To minimize damage from pests, diseases, and weeds
D.
To accelerate the ripening process of fruits
Question No. 2
Marks
+1
-0
Time
0:00
☰
Which of the following is considered a 'biotic' stress factor in crops?
A.
Drought
B.
Fungal infection
C.
High salinity in soil
D.
Extreme temperatures
Question No. 3
Marks
+1
-0
Time
0:00
☰
The practice of growing different crops in succession on the same piece of land is known as:
A.
Monocropping
B.
Crop rotation
C.
Intercropping
D.
Mixed cropping
Question No. 4
Marks
+1
-0
Time
0:00
☰
Which of the following is an example of a cultural method of pest control?
A.
Spraying insecticides
B.
Releasing ladybugs to control aphids
C.
Planting trap crops
D.
Using genetically modified insect-resistant crops
Question No. 5
Marks
+1
-0
Time
0:00
☰
What does the 'economic threshold level' (ETL) in pest management refer to?
A.
The pest population density at which control measures should be applied to prevent economic injury
B.
The maximum number of pests a crop can tolerate without any yield loss
C.
The point at which a pest population is completely eradicated
D.
The cost of pesticide application per hectare
Question No. 6
Marks
+1
-0
Time
0:00
☰
Biological control of pests involves the use of:
A.
Synthetic chemicals
B.
Natural predators, parasites, or pathogens
C.
Pheromone traps
D.
Mechanical barriers
Question No. 7
Marks
+1
-0
Time
0:00
☰
Which of the following is a major group of plant pathogens?
A.
Nematodes
B.
Arthropods
C.
Molluscs
D.
All of the above
Question No. 8
Marks
+1
-0
Time
0:00
☰
The term 'herbicide' refers to a chemical used to control:
A.
Insects
B.
Fungi
C.
Weeds
D.
Rodents
Question No. 9
Marks
+1
-0
Time
0:00
☰
Integrated Pest Management (IPM) emphasizes:
A.
The exclusive use of chemical pesticides
B.
The sole reliance on biological control methods
C.
A combination of various control methods with a focus on ecological safety
D.
The complete eradication of all pest species
Question No. 10
Marks
+1
-0
Time
0:00
☰
Why is quarantine an important principle of crop protection?
A.
To promote the introduction of new crop varieties
B.
To prevent the entry and spread of exotic pests and diseases into a new area
C.
To facilitate the international trade of agricultural products without inspection
D.
To test the efficacy of new pesticides
Question No. 11
Marks
+1
-0
Time
0:00
☰
A 'systemic' insecticide is one that:
A.
Kills pests only on direct contact
B.
Is absorbed and translocated throughout the plant, making the plant itself toxic to pests
C.
Repels pests from the crop
D.
Only affects a specific stage of the insect's life cycle
Question No. 12
Marks
+1
-0
Time
0:00
☰
What is the primary disadvantage of relying solely on chemical pesticides for crop protection?
A.
They are not effective against most pests
B.
Development of pesticide resistance in pests, and negative impacts on non-target organisms and the environment
C.
They are always more expensive than other control methods
D.
They have a very short shelf life
Question No. 13
Marks
+1
-0
Time
0:00
☰
The 'scope' of crop protection extends to:
A.
Pre-harvest and post-harvest management
B.
Only the growing season of the crop
C.
Only the storage of harvested produce
D.
Only the marketing of agricultural products
Question No. 14
Marks
+1
-0
Time
0:00
☰
Which of the following is a non-parasitic weed that competes with crops for nutrients, water, and sunlight?
A.
Dodder (Cuscuta)
B.
Broomrape (Orobanche)
C.
Wild oat (Avena fatua)
D.
Witchweed (Striga)
Question No. 15
Marks
+1
-0
Time
0:00
☰
The importance of crop protection lies in its contribution to:
A.
Ensuring food security and increasing farmers' income
B.
Promoting deforestation for agricultural expansion
C.
Increasing the genetic diversity of wild plant species
D.
Reducing the global population
Question No. 16
Marks
+1
-0
Time
0:00
☰
Which of the following is an example of a physical method of pest control?
A.
Crop rotation
B.
Hand-picking of insects
C.
Spraying neem oil
D.
Using insect-resistant varieties
Question No. 17
Marks
+1
-0
Time
0:00
☰
What is the role of a 'trap crop' in pest management?
A.
A crop that is highly resistant to pests
B.
A crop that is planted to attract pests away from the main crop
C.
A crop that repels pests from the entire field
D.
A crop that provides habitat for beneficial insects
Question No. 18
Marks
+1
-0
Time
0:00
☰
The green revolution was significantly aided by advancements in crop protection, which led to:
A.
Reduced use of high-yielding varieties
B.
Increased crop yields by minimizing losses
C.
A shift towards organic farming practices only
D.
The elimination of all agricultural pests
Question No. 19
Marks
+1
-0
Time
0:00
☰
A 'selective' herbicide is one that:
A.
Kills all types of plants it comes into contact with
B.
Is effective only during a specific season
C.
Kills target weed species without significantly harming the main crop
D.
Is derived from natural plant extracts
Question No. 20
Marks
+1
-0
Time
0:00
☰
What is the primary function of a fungicide?
A.
To control bacterial diseases
B.
To manage insect pests
C.
To control fungal diseases
D.
To eliminate weed competition
Question No. 21
Marks
+1
-0
Time
0:00
☰
Which principle of crop protection aims to prevent the establishment of a pest or pathogen in an area where it is not yet present?
A.
Exclusion
B.
Eradication
C.
Protection
D.
Resistance
Question No. 22
Marks
+1
-0
Time
0:00
☰
What is a potential 'reasoning' for a farmer to choose intercropping over monocropping?
A.
To simplify farm management practices
B.
To increase the risk of total crop failure
C.
To enhance biodiversity, improve soil health, and reduce pest and disease incidence
D.
To facilitate the use of broad-spectrum herbicides
Question No. 23
Marks
+1
-0
Time
0:00
☰
Understanding the life cycle of a pest is crucial for:
A.
Determining the market price of the crop
B.
Timing the application of control measures effectively
C.
Choosing the right type of fertilizer
D.
Predicting the weather conditions
Question No. 24
Marks
+1
-0
Time
0:00
☰
What is the significance of 'host plant resistance' in crop protection?
A.
It eliminates the need for any other control measure
B.
It is a genetically inherent ability of a plant to resist pest or disease attack
C.
It relies on the application of external chemical barriers
D.
It is only effective against vertebrate pests
Question No. 25
Marks
+1
-0
Time
0:00
☰
The excessive use of nitrogenous fertilizers can sometimes lead to:
A.
Increased resistance of crops to pests
B.
Increased susceptibility of crops to certain pests and diseases
C.
A decrease in the weed population
D.
Improved soil structure
Question No. 26
Marks
+1
-0
Time
0:00
☰
Which of the following is a 'post-harvest' crop protection measure?
A.
Weeding in the field
B.
Proper drying and storage of grains
C.
Seed treatment before sowing
D.
Application of insecticides during flowering
Question No. 27
Marks
+1
-0
Time
0:00
☰
The term 'biomagnification' in the context of pesticide use refers to:
A.
The breakdown of pesticides into harmless substances in the environment
B.
The increasing concentration of a pesticide in the tissues of organisms at successively higher levels in a food chain
C.
The process of using living organisms to detoxify pesticides
D.
The development of resistance to pesticides by target organisms
Question No. 28
Marks
+1
-0
Time
0:00
☰
A farmer notices that a particular pesticide is no longer effective against a pest it used to control. This is most likely a case of:
A.
Pesticide synergism
B.
Pesticide antagonism
C.
Pesticide resistance
D.
Pesticide formulation issue
Question No. 29
Marks
+1
-0
Time
0:00
☰
Why is it important to conserve natural enemies of pests in an agricultural ecosystem?
A.
They help in pollinating the crops
B.
They compete with the crop for resources
C.
They contribute to a natural and sustainable form of pest control
D.
They are a primary food source for the pests
Question No. 30
Marks
+1
-0
Time
0:00
☰
Which of the following is a key component of the 'disease triangle' in plant pathology?
A.
A virulent pathogen, a susceptible host, and a favorable environment
B.
The pesticide, the application equipment, and the farmer
C.
The seed, the soil, and the water
D.
The insect vector, the virus, and the plant
Question No. 31
Marks
+1
-0
Time
0:00
☰
The use of pheromone traps in pest management is a form of:
A.
Chemical control
B.
Biological control
C.
Behavioral control
D.
Cultural control
Question No. 32
Marks
+1
-0
Time
0:00
☰
What is the primary rationale for advocating 'seed certification' as a crop protection principle?
A.
To ensure that seeds are of a uniform size and color
B.
To guarantee a higher market price for the produce
C.
To provide farmers with seeds that are genetically pure, have good germination, and are free from seed-borne diseases and pests
D.
To control the branding and marketing of seeds
Question No. 33
Marks
+1
-0
Time
0:00
☰
The 'allelopathic' effect of some plants can be utilized in crop protection for:
A.
Attracting pests
B.
Weed suppression
C.
Enhancing crop growth directly
D.
Improving soil drainage
Question No. 34
Marks
+1
-0
Time
0:00
☰
Which of the following represents a significant 'social' importance of crop protection?
A.
Increased profits for pesticide manufacturing companies
B.
Contribution to rural employment and livelihood security for farmers
C.
A decrease in the global demand for food
D.
The aesthetic appeal of a pest-free field
Question No. 35
Marks
+1
-0
Time
0:00
☰
The legislative method of crop protection primarily involves:
A.
The development of new pesticide formulations
B.
The enforcement of laws and regulations like quarantine to prevent the spread of pests and diseases
C.
The use of traditional farming knowledge
D.
The breeding of pest-resistant crop varieties
Question No. 36
Marks
+1
-0
Time
0:00
☰
What is a major limitation of 'biological control' in crop protection?
A.
It is always faster acting than chemical pesticides
B.
It can sometimes be slow to establish and may not provide immediate control of a severe pest outbreak
C.
It is universally effective against all types of pests
D.
It has a detrimental impact on the environment
Question No. 37
Marks
+1
-0
Time
0:00
☰
The practice of 'tillage' can contribute to weed management by:
A.
Burying weed seeds deep in the soil profile
B.
Exposing weed seedlings to desiccation
C.
Uprooting and killing existing weeds
D.
All of the above
Question No. 38
Marks
+1
-0
Time
0:00
☰
A farmer chooses to plant a border of marigold flowers around his tomato field. What principle of crop protection is he likely applying?
A.
Repellent planting to deter nematodes and other pests
B.
Aesthetic improvement of the field
C.
A trap crop for tomato fruitworms
D.
A source of additional income
Question No. 39
Marks
+1
-0
Time
0:00
☰
The 'importance' of crop protection is magnified in developing countries because:
A.
Agriculture is often a major contributor to their GDP and employment
B.
They have a surplus of food and do not need to worry about crop losses
C.
Pesticide use is banned in these countries
D.
They primarily grow genetically modified crops
Question No. 40
Marks
+1
-0
Time
0:00
☰
Which of the following is an example of a 'biorational' pesticide?
A.
A broad-spectrum organophosphate insecticide
B.
Neem oil
C.
DDT
D.
A synthetic pyrethroid
Question No. 41
Marks
+1
-0
Time
0:00
☰
The concept of 'economic injury level' (EIL) is reached when:
A.
The cost of controlling a pest equals the value of the crop damage caused by the pest
B.
The pest population starts to cause noticeable damage to the crop
C.
The pest is first detected in the field
D.
A single pest is found in the crop
Question No. 42
Marks
+1
-0
Time
0:00
☰
What is a key 'reasoning' behind the promotion of Integrated Disease Management (IDM)?
A.
To completely replace the use of fungicides
B.
To manage plant diseases in a sustainable and holistic manner by combining various control strategies
C.
To focus solely on the chemical control of diseases
D.
To prioritize the development of disease-resistant crop varieties above all other methods
Question No. 43
Marks
+1
-0
Time
0:00
☰
The 'scope' of weed science as a discipline within crop protection includes the study of:
A.
Weed biology and ecology
B.
Weed-crop competition
C.
Weed management strategies
D.
All of the above
Question No. 44
Marks
+1
-0
Time
0:00
☰
Why is 'monitoring' or 'scouting' a fundamental principle of Integrated Pest Management (IPM)?
A.
It helps in determining the right time to harvest the crop
B.
It provides information on pest identity, population levels, and crop damage, which is essential for making informed control decisions
C.
It is a mandatory requirement for selling the crop in the market
D.
It ensures that the pesticides are applied uniformly
Question No. 45
Marks
+1
-0
Time
0:00
☰
Which of the following is a potential negative consequence of monoculture from a crop protection perspective?
A.
It creates a more stable and resilient agroecosystem
B.
It breaks the life cycles of pests and diseases
C.
It can lead to the build-up of specific pests and diseases adapted to that particular crop
D.
It reduces the efficiency of mechanical harvesting
Question No. 46
Marks
+1
-0
Time
0:00
☰
The use of 'certified disease-free planting material' is an example of which principle of plant disease control?
A.
Protection
B.
Exclusion
C.
Eradication
D.
Immunization
Question No. 47
Marks
+1
-0
Time
0:00
☰
The primary purpose of adding an 'adjuvant' to a pesticide spray solution is to:
A.
Increase the toxicity of the pesticide to humans
B.
Improve the performance of the pesticide by enhancing its spreading, sticking, or penetration properties
C.
Dilute the pesticide to reduce its cost
D.
Change the color of the pesticide for easy identification
Question No. 48
Marks
+1
-0
Time
0:00
☰
What is a significant 'economic' importance of effective post-harvest crop protection?
A.
It increases the cost of food for consumers
B.
It reduces food losses, thereby increasing the marketable surplus and ensuring better returns for farmers
C.
It provides employment opportunities in the pesticide industry
D.
It leads to a decrease in international trade of agricultural commodities
Question No. 49
Marks
+1
-0
Time
0:00
☰
The development of 'transgenic' or 'genetically modified' crops with insect resistance (e.g., Bt cotton) is a form of:
A.
Chemical control
B.
Cultural control
C.
Host plant resistance (a type of biological control)
D.
Physical control
Question No. 50
Marks
+1
-0
Time
0:00
☰
A farmer observes that weeds are most competitive with his crop during the first 30 days after sowing. This period is known as the:
A.
Critical period of crop-weed competition
B.
Harvesting period
C.
Fallow period
D.
Post-emergence period
Question No. 51
Marks
+1
-0
Time
0:00
☰
Which of the following is a primary reason for the 'global' importance of crop protection?
A.
To support the chemical industry
B.
To meet the increasing demand for food from a growing world population with limited arable land
C.
To promote the use of a single crop variety worldwide
D.
To reduce the number of farmers globally
Submit Test
Mark for Review & Next
Clear Response
‹ Prev
Save & Next ›
📋 Submit Test?
0
Answered
0
Skipped
51
Total
You
cannot
change answers after submission.
Cancel
Submit