Plants absorb minerals and nutrients from the soil in liquid form through Osmosis so they have to absorb much water even to take up small quantities of these nutrients.The excess of water is of no use for the plant so it gets rid of it through transpiration.

Introduction:
Plants require water for their growth and survival. However, excess water can be harmful to them. Therefore, plants absorb excess water from the soil and finally lose it by transpiration.

Why plants absorb excess water from the soil?
Plants absorb water from the soil through their roots. However, they only absorb the required amount of water for their growth and survival. The excess water in the soil can be harmful to the plant's roots as it can lead to waterlogging, which can cause root rot and other diseases. Therefore, plants absorb excess water from the soil to prevent waterlogging.

How do plants lose excess water?
Plants lose excess water through transpiration. Transpiration is the process by which water is lost from the plant's surface through evaporation. The water is first absorbed by the plant's roots and transported to the leaves through the stem. Once it reaches the leaves, the water is released into the atmosphere through small pores called stomata.

Importance of transpiration:
Transpiration is an important process for plants as it helps in regulating their body temperature, maintaining their shape and structure, and transporting minerals from the roots to other parts of the plant. In addition, transpiration also helps in maintaining the water balance in the plant's cells.

Conclusion:
In conclusion, plants absorb excess water from the soil to prevent waterlogging, and they lose it through transpiration. Transpiration is an important process for plants as it helps in regulating their body temperature, maintaining their shape and structure, and transporting minerals from the roots to other parts of the plant. Therefore, it is important to maintain the right balance of water in the soil for the healthy growth of plants.