Remote Sensing and GIS for Agriculture MCQs

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1. : What does Remote Sensing in agriculture mainly involve?
(A) Collecting field data manually
(B) Gathering information about the earth’s surface from satellites or aircraft
(C) Using only GPS receivers
(D) Applying fertilizers uniformly

2. : GIS stands for:
(A) General Information System
(B) Geographic Information System
(C) Global Irrigation Setup
(D) Ground Input System

3. : Which type of remote sensing uses sunlight as the energy source?
(A) Active remote sensing
(B) Passive remote sensing
(C) Radar sensing
(D) LIDAR sensing

4. : Active remote sensing requires:
(A) External energy source like radar or LiDAR
(B) Sunlight only
(C) Farmer’s observation
(D) Handwritten maps

5. : Which index is widely used to assess crop health from remote sensing data?
(A) NDVI (Normalized Difference Vegetation Index)
(B) GDP index
(C) Weather index
(D) Yield price index

6. : GIS in agriculture is mainly used for:
(A) Mapping soil and crop variability
(B) Hand irrigation
(C) Manual harvesting
(D) Farmer record keeping

7. : Which satellite program provides remote sensing data for agriculture?
(A) Landsat
(B) Google Earth only
(C) GPS
(D) Telephone satellites

8. : Which wavelength region is most useful in crop monitoring?
(A) Infrared
(B) Microwave only
(C) X-ray
(D) Gamma ray

9. : Which remote sensing technology is used for measuring crop canopy structure?
(A) LiDAR (Light Detection and Ranging)
(B) Thermometer
(C) GPS
(D) Soil auger

10. : Remote sensing helps farmers mainly by:
(A) Detecting crop stress and estimating yield
(B) Random harvesting
(C) Manual labor reduction only
(D) Market price analysis

11. : GIS integrates remote sensing data with:
(A) Maps and spatial information
(B) Manual charts
(C) Farmer’s memory
(D) Random drawings

12. : Which type of remote sensing can penetrate clouds and provide data in all weather?
(A) Radar (microwave) sensing
(B) Optical remote sensing
(C) Passive sensing
(D) Infrared sensing

13. : Crop yield prediction models rely heavily on:
(A) Remote sensing and GIS data
(B) Manual records only
(C) Market surveys
(D) Hand measurements

14. : GIS layers in agriculture may include:
(A) Soil maps, rainfall maps, crop distribution maps
(B) Handwritten farmer diaries
(C) Market prices only
(D) Traditional crop calendars

15. : Remote sensing for water stress detection in crops often uses:
(A) Thermal imaging
(B) Optical cameras only
(C) Farmer’s visual guess
(D) Soil hardness tests

16. : Which resolution is most important for agricultural remote sensing?
(A) Spatial resolution
(B) Audio resolution
(C) Time resolution in songs
(D) Manual resolution

17. : GIS-based zoning helps in:
(A) Site-specific crop management
(B) Manual irrigation
(C) Random ploughing
(D) Broadcasting fertilizers

18. : UAVs (drones) in remote sensing are used for:
(A) Capturing high-resolution field images
(B) Carrying livestock
(C) Storing seeds
(D) Irrigation pumping

19. : Which vegetation index helps identify drought conditions?
(A) NDVI and SAVI
(B) GDP index
(C) Market index
(D) Social index

20. : GIS is most helpful in precision farming because it:
(A) Integrates spatial and temporal data for decisions
(B) Provides manual records
(C) Increases labor requirements
(D) Ignores field variability

21. : Remote sensing data from satellites is updated in:
(A) Revisit cycles (e.g., 5–16 days)
(B) Manual observations daily
(C) Farmer’s notebooks
(D) Random intervals

22. : Which software is commonly used for GIS in agriculture?
(A) ArcGIS, QGIS
(B) MS Paint
(C) Notepad
(D) Calculator

23. : Remote sensing can detect pest outbreaks by:
(A) Identifying changes in vegetation reflectance
(B) Farmer’s diary notes
(C) Manual counting
(D) Random observation

24. : Integration of GPS, GIS, and remote sensing leads to:
(A) Smart precision agriculture systems
(B) Higher manual errors
(C) Traditional farming
(D) Random irrigation

25. : The biggest limitation of remote sensing for agriculture is:
(A) High cost and need for technical expertise
(B) Real-time crop monitoring
(C) Wide-area coverage
(D) Improved decision-making