Agro-climatic Zones, Remote Sensing, GIS in Agriculture

Question No. 1 Marks +1 -0 Time

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Which of the following factors is considered the primary basis for delineating Agro-climatic Zones?

A. Soil type and population density
B. Rainfall, temperature, and growing period
C. Market access and irrigation infrastructure
D. Crop yield statistics and farmer income levels

Question No. 2 Marks +1 -0 Time

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In remote sensing, the 'red edge' phenomenon is a sharp increase in reflectance observed in the spectral curve of healthy vegetation. What does this transition indicate?

A. Transition from blue to green light absorption
B. Transition from visible red to near-infrared (NIR) reflectance
C. Transition from ultraviolet to visible light absorption
D. Transition from thermal infrared emission to reflected energy

Question No. 3 Marks +1 -0 Time

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Which of the following is the most significant advantage of using a Geographic Information System (GIS) in precision agriculture for variable rate application of inputs?

A. Simplifying farm record keeping for tax purposes
B. Enabling uniform application of fertilizers across entire fields
C. Optimizing input use by applying resources only where and when needed
D. Automating the harvesting process for different crops

Question No. 4 Marks +1 -0 Time

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Consider the following steps involved in processing remote sensing data for agricultural applications:

1. Atmospheric Correction
2. Image Classification
3. Radiometric Calibration
4. Geometric Correction
5. Data Acquisition

Which of the following represents the correct chronological order of these steps?

A. 5, 1, 3, 4, 2
B. 5, 3, 1, 4, 2
C. 3, 5, 1, 4, 2
D. 5, 4, 1, 3, 2

Question No. 5 Marks +1 -0 Time

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Match the following Agro-climatic Zone classification criteria with their typical parameters:

List I (Classification Criteria)	List II (Typical Parameters)
P. Thermal Regime	1. Annual rainfall, Evapotranspiration
Q. Moisture Regime	2. Growing degree days, Frost-free period
R. Growing Period	3. Number of consecutive days with sufficient moisture and temperature for crop growth
S. Soil Type	4. Texture, pH, Organic matter content

A. P-2, Q-1, R-3, S-4
B. P-1, Q-2, R-3, S-4
C. P-2, Q-3, R-1, S-4
D. P-4, Q-1, R-2, S-3

Question No. 6 Marks +1 -0 Time

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Which type of remote sensing sensor actively emits its own electromagnetic radiation to illuminate the target and then detects the reflected or backscattered energy?

A. Radiometer
B. Spectrometer
C. Lidar
D. Hyperspectral sensor

Question No. 7 Marks +1 -0 Time

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In the context of GIS, what does 'topology' primarily refer to?

A. The visual appearance and symbology of geographic features on a map
B. The spatial relationships between geographic features (e.g., adjacency, connectivity, containment) that remain constant under transformations
C. The method of storing attribute data in a relational database
D. The process of converting raster data into vector data

Question No. 8 Marks +1 -0 Time

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How many of the following pairs correctly match the type of remote sensing resolution with its description?

1. Spatial Resolution: The smallest difference in electromagnetic energy that a sensor can detect.
2. Spectral Resolution: The number and width of spectral bands a sensor can record.
3. Temporal Resolution: The size of the smallest feature that can be detected.
4. Radiometric Resolution: The frequency with which a sensor can re-acquire imagery of the same area.

A. One
B. Two
C. Three
D. Four

Question No. 9 Marks +1 -0 Time

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According to the Planning Commission (now NITI Aayog) of India, how many major agro-climatic zones has the country been divided into for agricultural planning purposes?

A. 10
B. 15
C. 20
D. 25

Question No. 10 Marks +1 -0 Time

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Which of the following is NOT a typical application of Remote Sensing in monitoring crop health and yield estimation?

A. Assessing nutrient deficiencies through spectral reflectance
B. Detecting pest and disease outbreaks based on changes in canopy structure
C. Directly measuring the protein content of harvested grains in a laboratory
D. Estimating crop biomass and potential yield using vegetation indices

Question No. 11 Marks +1 -0 Time

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A farmer wants to identify areas within his farm that are most susceptible to soil erosion due to heavy rainfall and slope. Which GIS spatial analysis technique would be most appropriate for this task?

A. Network analysis
B. Buffering
C. Overlay analysis with elevation and soil type data
D. Geocoding

Question No. 12 Marks +1 -0 Time

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The Köppen climate classification system, often adapted for agro-climatic zoning, primarily uses which combination of parameters for its main divisions?

A. Soil type, vegetation cover, and altitude
B. Temperature, precipitation, and seasonality
C. Wind patterns, ocean currents, and latitude
D. Humidity, atmospheric pressure, and sunlight hours

Question No. 13 Marks +1 -0 Time

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Which of the following statements best describes the concept of 'Agro-ecological Zones' as an evolution from 'Agro-climatic Zones'?

A. Agro-ecological zones focus solely on temperature and rainfall, ignoring soil conditions.
B. Agro-ecological zones integrate climate, soil, and landform characteristics, along with socio-economic factors, for more holistic planning.
C. Agro-ecological zones are solely defined by the dominant crop grown in a region.
D. Agro-ecological zones are a less detailed classification system than agro-climatic zones.

Question No. 14 Marks +1 -0 Time

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What is the primary role of the 'Ground Segment' in a typical satellite-based remote sensing system for agriculture?

A. To launch the satellite into orbit
B. To acquire and process data from the satellite and disseminate it to users
C. To generate electromagnetic radiation for active sensors
D. To maintain the satellite's orbital trajectory

Question No. 15 Marks +1 -0 Time

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Which GIS data model is best suited for representing continuous phenomena like elevation, temperature maps, or satellite imagery?

A. Vector data model
B. Raster data model
C. Network data model
D. Tabular data model

Question No. 16 Marks +1 -0 Time

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Consider the following applications of Remote Sensing and GIS in agriculture:

1. Real-time monitoring of crop water stress.
2. Mapping soil nutrient variability across fields.
3. Predicting long-term climate change impacts on crop zones.
4. Automated harvesting of ripe fruits using robotic arms.

Which of these applications primarily involves the use of Remote Sensing and GIS technologies?

A. 1, 2, and 3 only
B. 1 and 2 only
C. 3 and 4 only
D. 1, 2, 3, and 4

Question No. 17 Marks +1 -0 Time

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Which of the following best defines the 'Growing Period' in the context of Agro-climatic Zones?

A. The total number of days a crop is present in the field, from sowing to harvest.
B. The period when rainfall exceeds evapotranspiration, allowing for continuous crop growth.
C. The number of consecutive days during which both moisture and temperature conditions are favorable for crop growth.
D. The duration between the last spring frost and the first autumn frost.

Question No. 18 Marks +1 -0 Time

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Which component of a GIS system is responsible for converting real-world features into a digital format that can be stored and analyzed?

A. Hardware
B. Software
C. Data
D. People

Question No. 19 Marks +1 -0 Time

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How can remote sensing data, particularly from thermal infrared bands, be effectively used in agricultural water management?

A. To directly measure the volume of groundwater reserves.
B. To identify areas of crop water stress based on canopy temperature differences.
C. To determine the chemical composition of irrigation water.
D. To map the depth of aquifers beneath agricultural fields.

Question No. 20 Marks +1 -0 Time

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Match the following Indian agro-climatic zones with their characteristic features:

List I (Agro-climatic Zone)	List II (Characteristic Feature)
P. Western Himalayan Zone	1. High rainfall, alluvial soils, paddy-jute system
Q. Lower Gangetic Plains Zone	2. Arid to semi-arid climate, sandy soils, pearl millet-cluster bean system
R. Western Dry Region Zone	3. Undulating topography, sub-tropical to temperate climate, horticulture-based farming
S. Central Plateau and Hills Zone	4. Moderate rainfall, red and black soils, rainfed sorghum-cotton system

A. P-3, Q-1, R-2, S-4
B. P-1, Q-3, R-2, S-4
C. P-3, Q-2, R-1, S-4
D. P-4, Q-1, R-3, S-2

Question No. 21 Marks +1 -0 Time

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Which of the following scenarios would most benefit from the integration of GIS, Remote Sensing, and Agro-climatic Zone data for agricultural planning?

A. A small-scale farmer planning daily irrigation schedules for a single crop type.
B. A national agency assessing crop suitability for new drought-resistant varieties across diverse regions.
C. A local cooperative managing the logistics of transporting harvested produce to market.
D. An individual researcher studying the genetic makeup of a specific plant species.

Question No. 22 Marks +1 -0 Time

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What is the primary function of a 'Digital Elevation Model' (DEM) in GIS for agricultural applications?

A. To map soil nutrient levels directly.
B. To represent the bare-earth surface topography and derive hydrological features.
C. To classify different crop types from satellite imagery.
D. To monitor pest infestation hotspots in real-time.

Question No. 23 Marks +1 -0 Time

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How many of the following statements about the advantages of satellite remote sensing over traditional field surveys for large-scale agricultural monitoring are correct?

1. Provides synoptic view over large areas.
2. Allows for repetitive data acquisition at regular intervals.
3. Can penetrate dense crop canopies to assess root health.
4. Reduces costs and time for data collection.

A. One
B. Two
C. Three
D. Four

Question No. 24 Marks +1 -0 Time

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Which of the following is an example of an 'attribute data' in a GIS layer representing agricultural fields?

A. The shapefile geometry defining the boundary of a field.
B. The spatial coordinates (latitude, longitude) of the field's centroid.
C. The crop type grown, fertilizer applied, or yield harvested for that field.
D. The resolution of the satellite image used to delineate the field.

Question No. 25 Marks +1 -0 Time

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What is the primary objective of delineating Agro-climatic Zones at a national or regional level?

A. To standardize crop prices across all regions regardless of production costs.
B. To promote monoculture by identifying the single most profitable crop for each zone.
C. To facilitate agricultural planning, resource allocation, and targeted crop diversification based on environmental suitability.
D. To strictly restrict farmers to growing only traditional crops within their designated zone.

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