Question

How is lightening beneficial to plants?

• A. It brings rain,
• B. It increases the amount of nitrates in the soil,
• C. It increases the minerals in the soil,
• D. It provides the chemical energy required by plants,

Answer 1

Answer: (B)

It increases the amount of nitrates in the soil,

Lightning causes electric discharge in the atmosphere causing oxygen and nitrogen to combine thus forming nitric acid. When this nitric acid reaches the Earth with rain it reacts with the alkalis in the soil to form nitrates which serve as plant food and help them in growth.