Waec Model Questions Vol1 2018 Agricultural Science Question 4

Practice objective / multiple choice question 4 from the 2018 Waec Model Questions Vol1 Agricultural Science examination.

Waec Model Questions Vol1 2018 Agricultural Science Objective / Multiple Choice Easy Difficulty
Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2018 • AGRICULTURAL_SCIENCE • objective

Explain the role of nitrogen‑fixing bacteria in legume cultivation and how they contribute to soil fertility.

Answer Options

A. They release oxygen into the soil, improving root respiration for the legume.
B. They fix carbon dioxide into sugars that the legume uses as an energy source.
C. They produce ethylene gas, which stimulates legume seed germination.
Correct Answer D. They convert atmospheric nitrogen into ammonia, providing usable nitrogen to the legume and enriching the soil after plant residues decompose.
Correct Answer
D
Correct Option:
They convert atmospheric nitrogen into ammonia, providing usable nitrogen to the legume and enriching the soil after plant residues decompose.

About This Question

This is Waec Model Questions Vol1 2018 Agricultural Science Question 4. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Agricultural Science examination.

Difficulty level: Easy .

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