In the sieve elements, which one of the following is the most likely function of P-proteins?

Deposition of callose on seive plates

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Providing energy for active translocation

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Autolytic enzymes

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Sealing off mechanism on wounding

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Solution

The correct option is D Sealing off mechanism on wounding
The P proteins are the proteins traversed by strands of cytoplasm in the small pores of sieve cells and the larger ones of sieve elements. It acts actively in transport or merely serves as a seal against leakage in case of injury.

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