1. : Which of the following is commonly used to measure tree height in the field?
(A) Hygrometer
(B) Clinometer
(C) Lux meter
(D) Barometer
2. : The quadrat method is primarily used for:
(A) Measuring rainfall
(B) Estimating plant population and cover
(C) Soil nutrient analysis
(D) Recording wind speed
3. : A line transect in environmental science is used to:
(A) Estimate animal density
(B) Sample vegetation along a gradient
(C) Measure soil pH
(D) Record light intensity
4. : Which tool is used to collect soil samples in field studies?
(A) Soil auger
(B) Microscope
(C) Spectrophotometer
(D) Turbidimeter
5. : The capture-mark-recapture method is widely used to estimate:
(A) Plant diversity
(B) Animal population size
(C) Water turbidity
(D) Soil porosity
6. : Which of the following is used to measure light intensity in the field?
(A) Anemometer
(B) Lux meter
(C) DO meter
(D) Rain gauge
7. : A pitfall trap is typically used for:
(A) Studying insects and small ground animals
(B) Measuring tree growth
(C) Collecting rainfall
(D) Measuring wind velocity
8. : Which device is used to measure wind speed?
(A) Hygrometer
(B) Anemometer
(C) Clinometer
(D) Barometer
9. : A Secchi disk is used in aquatic fieldwork to measure:
(A) Water temperature
(B) Water clarity/light penetration
(C) Dissolved oxygen
(D) Soil depth
10. : The point intercept method is mainly used for:
(A) Soil sampling
(B) Estimating vegetation cover
(C) Air quality monitoring
(D) Measuring tree diameter
11. : Which technique is commonly used to estimate bird populations?
(A) Mist netting
(B) Quadrat method
(C) Line transect only
(D) Soil coring
12. : A rain gauge is used for measuring:
(A) Soil nutrients
(B) Precipitation
(C) Wind velocity
(D) Light intensity
13. : Which of the following is used to measure soil moisture in the field?
(A) Clinometer
(B) Tensiometer
(C) Lux meter
(D) Rain gauge
14. : A Sherman trap is mainly used to capture:
(A) Small mammals
(B) Birds
(C) Soil microbes
(D) Amphibians
15. : Which field method is commonly used to study aquatic invertebrates?
(A) Plankton net
(B) Pitfall trap
(C) Mist net
(D) Soil auger
16. : The belt transect method is an extension of:
(A) Quadrat method
(B) Line transect method
(C) Capture-recapture method
(D) Point intercept method
17. : Which instrument is used for measuring atmospheric pressure in the field?
(A) Hygrometer
(B) Barometer
(C) Anemometer
(D) Thermometer
18. : Which technique is used to study plant canopy cover?
(A) Canopy densiometer
(B) Secchi disk
(C) Lux meter
(D) Turbidimeter
19. : Which is a non-destructive field method for vegetation study?
(A) Remote sensing
(B) Quadrat harvest method
(C) Soil excavation
(D) Pitfall trapping
20. : Which field instrument measures relative humidity?
(A) Anemometer
(B) Hygrometer
(C) Rain gauge
(D) Clinometer
21. : Which method is used to study soil profile in the field?
(A) Soil pit excavation
(B) Mist netting
(C) Capture-mark-recapture
(D) Spectrophotometry
22. : A flow meter in fieldwork is used to measure:
(A) Water current velocity
(B) Air humidity
(C) Soil salinity
(D) Rainfall
23. : Which technique is most suitable for estimating tree diameter?
(A) DBH tape (Diameter at Breast Height)
(B) Hygrometer
(C) Pitfall trap
(D) Lux meter
24. : A Malaise trap is primarily used for capturing:
(A) Flying insects
(B) Soil microbes
(C) Amphibians
(D) Birds
25. : Which sampling technique is used for fish population studies?
(A) Electrofishing
(B) Quadrat sampling
(C) Mist netting
(D) Pitfall trapping
26. : Which method is commonly used to study species diversity in a habitat?
(A) Quadrat method
(B) Line transect method
(C) Capture-recapture method
(D) All of the above
27. : Which tool is used to measure soil compaction?
(A) Penetrometer
(B) Hygrometer
(C) Clinometer
(D) DO meter
28. : A thermometer in field studies is used for measuring:
(A) Soil temperature
(B) Air temperature
(C) Water temperature
(D) All of the above
29. : Which of the following is a biological method of environmental field study?
(A) Pitfall trapping
(B) Mist netting
(C) Capture-mark-recapture
(D) All of the above
30. : Which instrument is used for geographic positioning in fieldwork?
(A) GPS device
(B) Lux meter
(C) Clinometer
(D) Barometer
31. : Which method is used for estimating biomass in the field?
(A) Harvest method
(B) Quadrat sampling
(C) Remote sensing
(D) All of the above
32. : The canopy cover of a forest is measured using:
(A) Canopy densiometer
(B) Soil auger
(C) Lux meter
(D) Hygrometer
33. : Which trap is commonly used for bird banding?
(A) Mist net
(B) Pitfall trap
(C) Sherman trap
(D) Malaise trap
34. : Which method involves counting all individuals within a defined area?
(A) Quadrat method
(B) Capture-recapture method
(C) Random sampling
(D) Transect method
35. : A respirometer in field studies is used to measure:
(A) Respiration rate of organisms
(B) Soil hardness
(C) Tree age
(D) Rainfall
36. : Which device is commonly used to measure CO₂ concentration in field studies?
(A) Infrared Gas Analyzer
(B) Barometer
(C) Lux meter
(D) DO meter
37. : Which method is best suited for sampling marine plankton?
(A) Plankton net
(B) Mist net
(C) Soil auger
(D) Line transect
38. : Which is a field-based remote sensing tool?
(A) Drone with sensors
(B) Soil corer
(C) Clinometer
(D) Rain gauge
39. : Which sampling method reduces bias in environmental fieldwork?
(A) Random sampling
(B) Systematic sampling
(C) Stratified sampling
(D) All of the above
40. : Which of the following is measured in hydrological field studies?
(A) Stream velocity
(B) Groundwater level
(C) Water quality
(D) All of the above
41. : Which tool is used to measure tree age without cutting it down?
(A) Increment borer
(B) Clinometer
(C) Soil auger
(D) Lux meter
42. : The point count method is commonly used to study:
(A) Birds
(B) Soil microbes
(C) Insects
(D) Amphibians
43. : Which sampling tool is used for studying benthic organisms?
(A) Ekman grab sampler
(B) Mist net
(C) Sherman trap
(D) Clinometer
44. : Which device measures dissolved oxygen in water during fieldwork?
(A) DO meter
(B) Turbidimeter
(C) Hygrometer
(D) Anemometer
45. : Which is an example of in situ measurement in fieldwork?
(A) Soil pH measurement in the field
(B) Soil nutrient analysis in a lab
(C) Water filtration in lab
(D) Vegetation dried in an oven
46. : Which type of sampling is most suitable for studying rare species?
(A) Stratified sampling
(B) Random sampling
(C) Purposive sampling
(D) Systematic sampling
47. : Which method is used for marking animals in capture-recapture studies?
(A) Ear tagging
(B) Banding
(C) Paint marking
(D) All of the above
48. : Which method is used for estimating forest density?
(A) Quadrat method
(B) Point-centered quarter method
(C) Line transect
(D) All of the above
49. : Which instrument is essential in geological field methods?
(A) Compass clinometer
(B) Lux meter
(C) DO meter
(D) Microscope
50. : The ultimate aim of field methods in environmental science is:
(A) To collect reliable ecological data for analysis and conservation
(B) To replace laboratory studies
(C) To ignore biodiversity
(D) To eliminate environmental variability