To solve the problem, we need to identify the element that is essential for the synthesis of chlorophyll in plants.
- Chlorophyll is the green pigment found in plants that allows them to absorb sunlight for photosynthesis.
- The structure of chlorophyll includes a central metal atom that is vital for its function.
- The central atom in the chlorophyll molecule is magnesium (Mg).
- Magnesium is crucial because it helps capture light energy during photosynthesis.
- Other elements like calcium, sodium, and potassium have important roles in plant health but are not part of the chlorophyll molecule.
The element essential for the synthesis of chlorophyll is magnesium.