CBSE Class 3  >  Class 3 Notes  >  EVS : The World around us (Our Wondrous World)  >  Visual Worksheet: What Do Plants Need?

Visual Worksheet: What Do Plants Need?

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FAQs on Visual Worksheet: What Do Plants Need?

1. What are the essential needs of plants?
Ans. Plants need sunlight, water, air, nutrients from the soil, and space to grow. Sunlight helps them with photosynthesis, water is vital for their cellular functions, air provides carbon dioxide for making food, nutrients support their growth, and space ensures they can spread their roots and leaves.
2. How does sunlight help plants?
Ans. Sunlight is crucial for photosynthesis, the process through which plants convert light energy into chemical energy. During photosynthesis, plants use sunlight to transform carbon dioxide from the air and water from the soil into glucose (a type of sugar) and oxygen. This glucose provides energy for growth and development.
3. Why is water important for plants?
Ans. Water is essential for various plant functions. It helps in transporting nutrients from the soil to the plant, maintaining cell turgor (which keeps the plant upright), and is involved in photosynthesis. Without enough water, plants can wilt, and their growth can be stunted.
4. What nutrients do plants need from the soil?
Ans. Plants require several nutrients from the soil, including nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. These nutrients support various plant functions, such as growth, flowering, and fruiting. A lack of these nutrients can lead to poor plant health and reduced yields.
5. How does air impact plant growth?
Ans. Air provides carbon dioxide, which is essential for photosynthesis. Plants take in carbon dioxide through tiny openings called stomata. Additionally, air circulation helps prevent disease by allowing moisture to evaporate and keeping leaves dry, reducing the risk of fungal infections.
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