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Loading of phloem is related to

1. increase of sugar in phloem
2. elongation of phloem cell
3. separation of phloem parenchyma
4. strengthening of phloem fibre

Correct answer: increase of sugar in phloem

Solution

Phloem loading is the process of adding sugars, mainly sucrose, into the phloem sieve elements. This increases sugar concentration and helps create the pressure gradient needed for translocation.

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