Waec Model Questions Vol1 2022 Agricultural Science Question 14

Practice objective / multiple choice question 14 from the 2022 Waec Model Questions Vol1 Agricultural Science examination.

Waec Model Questions Vol1 2022 Agricultural Science Objective / Multiple Choice Easy Difficulty
Question 14 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • AGRICULTURAL_SCIENCE • objective

Explain how rotating a maize crop with a leguminous crop benefits soil nitrogen levels, mentioning the specific biological process involved.

Answer Options

A. Leguminous crops improve soil nitrogen by increasing the activity of mycorrhizal fungi, which convert atmospheric nitrogen into usable forms for maize.
B. The benefit comes from leguminous crops absorbing nitrogen from the soil and storing it in their leaves, which decompose and add nitrogen after harvest.
C. Leguminous crops increase soil nitrogen by releasing nitrates directly from their roots, which the following maize crop can absorb.
Correct Answer D. Leguminous crops fix atmospheric nitrogen through symbiotic nitrogen fixation with Rhizobium bacteria, enriching the soil nitrogen for the subsequent maize crop.
Correct Answer
D
Correct Option:
Leguminous crops fix atmospheric nitrogen through symbiotic nitrogen fixation with Rhizobium bacteria, enriching the soil nitrogen for the subsequent maize crop.

About This Question

This is Waec Model Questions Vol1 2022 Agricultural Science Question 14. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Agricultural Science examination.

Difficulty level: Easy .

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