Why Do Plants Need Water?


Plants are living organisms that are essential to the environment and to the survival of other living creatures. They produce oxygen and serve as a primary source of food for many animals, including humans. But for plants to grow and thrive, they require water, which is a vital component for their survival.

Hanging baskets are a popular choice for many people who want to add some greenery to their homes or outdoor spaces. One reason why people prefer to install hanging baskets for plants is that they can be a great space-saving solution.

Water is essential for plants in many ways, from the absorption of nutrients to the regulation of temperature. Without enough water, plants will not be able to carry out photosynthesis, which is the process by which they produce energy. Here are some reasons why plants need water:

Reasons why plants need water

1. Photosynthesis

Photosynthesis is a process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds, primarily glucose. This process is vital for the survival of these organisms, as it allows them to produce their own food and oxygen, which is necessary for other living creatures.

Photosynthesis takes place in the chloroplasts of plant cells, which contain a pigment called chlorophyll. Chlorophyll absorbs light energy from the sun, which is then used to split water molecules into oxygen and hydrogen ions. The oxygen is released into the atmosphere, while the hydrogen ions are used to create energy in the form of ATP (adenosine triphosphate).

2. Nutrient Absorption

Nutrient absorption is a vital process for the growth and development of plants. Nutrients such as nitrogen, phosphorus, and potassium are essential for the formation of healthy leaves, stems, and roots. These nutrients are absorbed by the plant’s roots from the soil, but the process is not as simple as just taking up these nutrients from the surrounding environment.

arranging pot plant

Plants have specialized cells in their roots called root hairs, which are responsible for the absorption of nutrients. These cells increase the surface area of the root, allowing for more efficient absorption of nutrients. Nutrients are absorbed by the plant through a process called active transport, which requires energy from the plant in the form of ATP.

3. Cell Expansion

Cell expansion is a crucial process for the growth and development of plants. It refers to the enlargement of cells, which allows the plant to increase in size and develop its organs such as leaves, stems, and roots. Water uptake is the primary driving force behind cell expansion in plants.

When a plant cell absorbs water, it swells and exerts pressure on its cell wall, a process called turgor pressure. The cell wall resists the pressure exerted by the expanding cell, and this results in the enlargement of the cell. The turgor pressure helps to maintain the shape and rigidity of the cell, allowing it to function properly.

4. Temperature Regulation

Temperature regulation is a crucial process for the growth and survival of plants. Plants are sensitive to changes in temperature, and extreme temperatures can have a significant impact on their growth and development.

One way that plants regulate their temperature is through transpiration, which is the loss of water vapor from the plant’s leaves. As water evaporates from the leaves, it cools the plant and helps to prevent overheating. This process is similar to sweating in animals, where sweat evaporates from the skin, cooling the body.

Caring for plants can also have mental and emotional benefits, as studies have shown that being around greenery can reduce stress and improve overall well-being. By caring for plants, we can help preserve the environment and contribute to a sustainable future.

5. Seed Germination

Seed germination is the process by which a plant embryo, enclosed within a seed, starts to grow and develop into a new plant. This process is essential for plant reproduction and the continuation of plant species.

The process of seed germination is triggered by environmental cues such as water, oxygen, and temperature. When a seed is exposed to water, it absorbs it through the seed coat, and this activates the enzymes within the seed, leading to the breakdown of stored nutrients. The stored nutrients provide energy and nutrients for the growing embryo.


Water is an essential component for the growth and survival of plants. It is necessary for photosynthesis, nutrient absorption, cell expansion, temperature regulation, and seed germination. Without enough water, plants would not be able to grow and thrive, which would have a significant impact on the environment and the survival of other living creatures. It is, therefore, important to ensure that plants have access to enough water to grow and thrive.

Leave a Comment