Final answer:
Plants wilt due to lack of water and low turgor pressure.
Step-by-step explanation:
Plants wilt when there is a lack of water and low turgor pressure in their cells.
Lack of water causes the plant cells to lose water through transpiration, which leads to a decrease in turgor pressure. When cells have low turgor pressure, the plant becomes flaccid and wilts.
On the other hand, increased rainfall and high turgor pressure in plant cells would promote turgidity and prevent wilting.
Learn more about Factors causing plant wilting