Removal of phloem tissue leads to gradual death of the plant. Why does this happen?

Distribution of carbohydrates from the leaves to the other parts of the plant is affected.
Distribution of water and nutrients from the roots to the other parts of the plants is affected.
Distribution of water and nutrients to the flowers affects seed formation.

Question

Removal of phloem tissue leads to gradual death of the plant. Why does this happen?

Distribution of carbohydrates from the leaves to the other parts of the plant is affected.
Distribution of water and nutrients from the roots to the other parts of the plants is affected.
Distribution of water and nutrients to the flowers affects seed formation.

scarlett_feathers · Answer

The phloem is essential for transporting sugars the plant has made to other areas of the plant, this is necessary as some areas of the plant cannot perform photosynthesis or perform it at a much slower rate. E.g. the roots can't perform photosynthesis to get the sugars it needs because they aren't exposed to light, but they still need energy to function and without sugar transport by the phloem they would not get this so areas of the plant would die