Why is an ongoing supply of water important for plants?

An ongoing supply of water is crucial for plants primarily for two reasons: it supports photosynthesis and helps prevent cell drooping.

Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen, which is essential for their growth and energy. Water acts as a vital reactant in this process. Without adequate water, photosynthesis would be hindered, leading to stunted growth and reduced energy production.

Additionally, water plays a critical role in maintaining turgor pressure within plant cells. This pressure is necessary to keep the cells firm, which in turn helps maintain the overall structure and rigidity of the plant. If plants do not receive enough water, they can become limp or wilted, a condition often referred to as "cell droop." Thus, continuous access to water is vital for these fundamental biological functions.