Which soil horizon contains the maximum biological activity? MCQ with Answer and Explanation

Which soil horizon contains the maximum biological activity?
A. B Horizon
B. A Horizon
C. C Horizon
D. R Horizon
Answer: Option B
Solution (By JKExamLibrary)
The A Horizon or topsoil contains humus and supports maximum microbial and biological activity.

This question belongs to: Geography GK Soils of India

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Practice More Soils of India Questions

Question #1 Report Error
Which type of weathering is most common in hot desert regions?
A. None
B. Biological weathering
C. Mechanical weathering
D. Chemical weathering

Correct Answer: Option C


Explanation:
Mechanical weathering dominates in deserts due to temperature changes causing rock expansion and contraction.

This question belongs to: Geography GK Soils of India
Question #2 Report Error
Which state is famous for tea cultivation on mountain soils?
A. Punjab
B. Gujarat
C. Assam
D. Rajasthan

Correct Answer: Option C


Explanation:
Tea plantations in Assam thrive on well-drained hill and mountain soils.

This question belongs to: Geography GK Soils of India
Question #3 Report Error
Which nutrient is primarily responsible for flowering and fruiting in plants?
A. Hydrogen
B. Phosphorus
C. Carbon
D. Nitrogen

Correct Answer: Option B


Explanation:
Phosphorus promotes root growth, flowering, seed formation, and fruit development.

This question belongs to: Geography GK Soils of India