If leaves are covered (blocking light) or deprived of water, you’d likely notice these changes:1. Wilting – Without enough water, the cells lose turgor pressure, making leaves droop.2. Color change – Leaves may turn yellow or brown as chlorophyll breaks down.3. Dryness or brittleness – The leaf surface can become dry and crispy.4. Slower or no growth – Lack of water stops photosynthesis, so the leaf stops developing.5. Spots or damage – Prolonged stress can cause dark spots or dead patches.Basically, without water, the leaf can’t carry out photosynthesis or maintain its structure, so it weakens and eventually dies.