Which is associated with electron transport in photosynthesis?

Sodium

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Potassium

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Iron

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Cobalt

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Solution

The correct option is C Iron
Iron is the most important metal involved in thylakoid reactions mainly electron transport. It is the main constituent of many electron carriers. It helps in electron transport from water to NADP+ in PS II. Cytochrome b $_{6}$ -f also contains Iron element, PS I and ferredoxin is also iron associated protein.

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