Mineral Nutrition
Telangana Open School (TOSS) · Class 12 · Biology
Flashcards for Mineral Nutrition — Telangana Open School (TOSS) Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is mineral nutrition in plants?
Answer
Mineral nutrition refers to the process by which plants absorb inorganic ions from the soil, use them for growth, development, and reproduction. These minerals are essential for building plant structu…
Define essential elements in plant nutrition.
Answer
Essential elements are those inorganic elements that are absolutely necessary for normal growth and reproduction of plants. They cannot be replaced by any other element and are directly involved in pl…
What are the three criteria for an element to be considered essential?
Answer
1. The element must be absolutely necessary for normal growth and reproduction. 2. The requirement must be specific and irreplaceable. 3. The element must be directly involved in plant nutrition or me…
How many essential elements do plants require?
Answer
Plants require 17 essential elements. These include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, molybdenum, chlorine, a…
Differentiate between macronutrients and micronutrients.
Answer
Macronutrients are required in large amounts (e.g., N, P, K, Ca, Mg, S), while micronutrients (or trace elements) are needed in very small quantities (e.g., Fe, Zn, Cu, B, Mn, Mo, Cl). Deficiency of e…
Name the macronutrients required by plants.
Answer
The macronutrients are: Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), Phosphorus (P), Potassium (K), Calcium (Ca), Magnesium (Mg), and Sulfur (S).
Why are carbon, hydrogen, and oxygen called framework elements?
Answer
Carbon, hydrogen, and oxygen form the basic structural components of carbohydrates, proteins, fats, and nucleic acids. They make up the backbone of organic molecules in plants and are obtained from CO…
What are critical elements in plant nutrition? Give examples.
Answer
Critical elements are those that play a vital role in the life cycle of plants. Nitrogen (N), Phosphorus (P), and Potassium (K) are called critical elements because they are involved in key processes …
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