Neco Model Questions Vol1 2025 Agricultural Science Question 26

Practice objective / multiple choice question 26 from the 2025 Neco Model Questions Vol1 Agricultural Science examination.

Neco Model Questions Vol1 2025 Agricultural Science Objective / Multiple Choice Easy Difficulty
Question 26 NECO_MODEL_QUESTIONS_VOL1 • 2025 • AGRICULTURAL_SCIENCE • objective

A farmer rotates a legume crop with a cereal crop each season. Explain how this practice influences the nitrogen content of the soil and the subsequent cereal yield.

Answer Options

A. The legume adds organic carbon but not nitrogen, so the cereal relies on fertilizer for its yield.
B. The legume releases nitrogen gas back to the atmosphere, leaving the soil nitrogen unchanged and the cereal yield similar.
C. The legume competes with the cereal for water, reducing soil nitrogen and lowering the cereal yield.
Correct Answer D. The legume fixes atmospheric nitrogen, enriching the soil after decomposition; the cereal then accesses this extra nitrogen, resulting in higher yield.
Correct Answer
D
Correct Option:
The legume fixes atmospheric nitrogen, enriching the soil after decomposition; the cereal then accesses this extra nitrogen, resulting in higher yield.

About This Question

This is Neco Model Questions Vol1 2025 Agricultural Science Question 26. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Agricultural Science examination.

Difficulty level: Easy .

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