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In a ring girdled plant:

1. The root dies first
2. The shoot and root die together
3. Neither root nor shoot will die
4. The shoot dies first

Correct answer: The root dies first

Solution

In a ring-girdled plant, the phloem is removed or damaged, stopping the downward movement of food from the leaves to the roots. The roots are cut off from their energy supply first, so they die before the shoot.

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