NEET BIOLOGY

Detailed explanation-1: -The sixteen chemical elements are divided into two main groups: non-mineral and mineral. The Non-Mineral Nutrients are hydrogen (H), oxygen (O), & carbon (C). These nutrients are found in the air and water.

Detailed explanation-2: -Non-mineral nutrients are in the compounds required (reactants) for photosynthesis. These are carbon (C), hydrogen (H), and oxygen (O). While added carbon dioxide could be considered a “fertilizer”, it is not practical for most gardeners to increase the amount available to plants.

Detailed explanation-3: -Nutrients that plants require in larger amounts are called macronutrients. About half of the essential elements are considered macronutrients: carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium and sulfur.

Detailed explanation-4: -Nonmineral elements that are required include oxygen, hydrogen, and carbon. These elements are synthesized by the body. They are only needed in trace amounts.

Detailed explanation-5: -However, the four major structural elements in the human body by weight (oxygen, hydrogen, carbon, and nitrogen), are usually not included in lists of major nutrient minerals (nitrogen is considered a “mineral” for plants, as it often is included in fertilizers).