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Agriculture Mcqs 7387 MCQs [All-Courses]

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Agriculture MCQs cover fundamental and applied concepts related to farming, crop production, soil science, irrigation, fertilizers, plant breeding, pests, and agricultural economics. This topic is designed to strengthen conceptual understanding and problem-solving skills through objective questions. It is especially useful for competitive exams such as PPSC, FPSC, KPPSC, BPSC, NTS, OTS, and other testing services, helping candidates prepare with exam-oriented and up-to-date agricultural knowledge.

All Topics  7387

Niche of a species in an ecosystem refers to its:
A Place of occurrence
B Competitive ability
C Centre of origin
D Function at its place of occurrence
Correct Answer: Function at its place of occurrence
Energy transfer from one trophic level to other in a food chain is:
A 1%
B 2%
C 10%
D 20%
Correct Answer: 10%
Ecosystem receives nitrogen from outside through:
A Biological nitrogen fixation
B Electrification of nitrogen
C Industries
D All the above
Correct Answer: All the above
If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected because:
A Herbivores will not receive solar energy
B Rate of decomposition of other component will be very high
C Mineral movement will be blocked
D Energy flow will be blocked
Correct Answer: Mineral movement will be blocked
Mark the incorrect statement with reference to carbon cycle:
A Lime rocks contribute to CO2 of water
B Atmospheric CO2 gets dissolved in water
C CO2 is returned by combustion of fuel
D 75% of total carbon lies in geological component
Correct Answer: 75% of total carbon lies in geological component
The sulphate rocks are formed in ocean by leaching of:
A FeS and Fe2S3
B Organic sulphates and -SH
C Soluble inorganic sulphates
D All of these
Correct Answer: Soluble inorganic sulphates
Hydrological cycle is under the control of:
A Grasslands
B Forests
C Planktons
D Epiphytes
Correct Answer: Forests
The maximum amount of CO2 fixed by green plants by way of photosynthesis in a year is:
A 9 x 1013 kg
B 8 x 1012 kg
C 9 x 1011 kg
D 8 x 1010 kg
Correct Answer: 9 x 1013 kg
According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:
A 150
B 1,500
C 300
D 3,000
Correct Answer: 1,500
The SO2 is returned to the atmosphere by:
A Metabolism of producers
B Metabolism of consumers
C Both (a) & (b)
D Combustion of fuel
Correct Answer: Combustion of fuel
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