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Mind Map: Nutrition in Plants | Science Class 7 (Old NCERT)

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FAQs on Mind Map: Nutrition in Plants - Science Class 7 (Old NCERT)

1. What is nutrition in plants?
Ans. Nutrition in plants refers to the process by which plants obtain and utilize essential nutrients for their growth and development. It involves the absorption of mineral nutrients from the soil through their roots and the synthesis of organic compounds through photosynthesis.
2. How do plants absorb nutrients from the soil?
Ans. Plants absorb nutrients from the soil through their root system. The root hairs present on the surface of the roots greatly increase the surface area available for absorption. Nutrients are absorbed by the roots through active transport, where they move from an area of lower concentration in the soil to an area of higher concentration inside the root cells.
3. What are the essential nutrients required by plants?
Ans. Plants require essential nutrients for their growth and development. These include macronutrients such as nitrogen (N), phosphorus (P), and potassium (K), as well as micronutrients such as iron (Fe), manganese (Mn), and zinc (Zn). These nutrients are necessary for various metabolic processes and the synthesis of important molecules in plants.
4. How does photosynthesis play a role in plant nutrition?
Ans. Photosynthesis is a vital process for plant nutrition. During photosynthesis, plants use sunlight, carbon dioxide (CO2), and water (H2O) to produce glucose (a sugar) and oxygen (O2). Glucose serves as a source of energy for plants, while oxygen is released into the atmosphere. This process allows plants to synthesize their own food and provide energy for other cellular activities.
5. What are the factors that can affect plant nutrition?
Ans. Several factors can impact plant nutrition. Soil pH, for example, affects the availability of certain nutrients. Some plants may require specific soil pH conditions for optimal nutrient absorption. Additionally, the presence of pests or diseases can affect a plant's ability to absorb and utilize nutrients. Environmental factors such as temperature and water availability also play a role in plant nutrition.
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