GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Iron
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Calcium
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Phosphorus
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Magnesium
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Detailed explanation-1: -The correct answer is option 1 i.e. Magnesium. The green pigment of the leaf is called Chlorophyll which has Magnesium(Mg) involved in its structure which imparts the green color of the leaf.
Detailed explanation-2: -Magnesium is an important element in plants. It is an important element present in the center of chlorophyll. It is present in all green plants and necessary to conduct photosynthesis. It acts as an enzyme and helps in respiration.
Detailed explanation-3: -A single magnesium ion is bound at the centre of chlorophyll, the pigment that plants use to harvest energy from sunlight. Chlorophyll gives plants their green colour; if they cannot get enough magnesium from the soil, their leaves start to yellow.