Plants receive their nutrients mainly from
Detailed Explanation:
Soil is the primary source of essential mineral nutrients for plants, including nitrogen, phosphorus, potassium, calcium, magnesium, and micronutrients like zinc and iron. These nutrients are absorbed by roots in ionic forms dissolved in soil water.
The atmosphere provides carbon dioxide for photosynthesis, and light drives photosynthesis, but neither supplies mineral nutrients. Chlorophyll is a pigment that captures light energy, not a nutrient source.
Therefore, soil is the main nutrient reservoir for plants, making Option 3 the correct answer.
Question 17 of 20 Plant Physiology
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Pollination is best defined as
Water passes from the soil into the roots by a physical process called