Class 4 Exam > Class 4 Notes > Science Olympiad Class 4 > Visual Worksheet: Needs of Plants
Visual Worksheet: Needs of Plants | Science Olympiad Class 4 PDF Download
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FAQs on Visual Worksheet: Needs of Plants - Science Olympiad Class 4
| 1. What are the basic needs of plants? |  |
Ans. The basic needs of plants include sunlight, water, air, nutrients, and soil. Sunlight provides the energy necessary for photosynthesis, while water is essential for transporting nutrients and maintaining cell structure. Air supplies carbon dioxide, which plants use during photosynthesis. Nutrients from the soil support growth and development, and healthy soil provides a foundation for plants to anchor their roots.
| 2. How do plants obtain their nutrients? | |
Ans. Plants obtain nutrients primarily through their roots from the soil. The roots absorb water and dissolved minerals, such as nitrogen, phosphorus, and potassium, which are essential for various physiological functions. Additionally, some plants can also obtain nutrients through symbiotic relationships with fungi, which help them absorb more nutrients from the soil.
| 3. Why is sunlight important for plants? | |
Ans. Sunlight is crucial for plants because it is the primary source of energy for photosynthesis. During this process, plants convert light energy into chemical energy by transforming carbon dioxide and water into glucose and oxygen. This glucose not only provides energy for the plant but also serves as a building block for growth and development.
| 4. What role does water play in plant growth? | |
Ans. Water plays several vital roles in plant growth. It is necessary for photosynthesis, as it is one of the raw materials used to produce glucose. Water also helps transport nutrients from the soil to different parts of the plant, maintains turgor pressure for structural support, and is involved in the regulation of temperature through transpiration.
| 5. Can plants survive without soil? | |
Ans. Yes, some plants can survive without traditional soil through a process known as hydroponics. In hydroponic systems, plants grow in a nutrient-rich water solution, allowing them to access the necessary nutrients directly. This method can be highly efficient and is often used in controlled environments like greenhouses. However, most plants still require some form of support, whether that be soil or another growing medium.
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