Hydroponics is a system of growing plans in

Options

A. soilless culture or solution culture
B. acidic soils
C. soilless culture with alkaline pH
D. soilless culture with acidic pH

Answer

**Step-by-Step Text Solution:**

1. **Understanding Hydroponics**: Hydroponics is a method of growing plants without soil. Instead of soil, plants are grown in a nutrient-rich solution. This allows for better control over the nutrients and conditions the plants receive.

2. **Defining the Correct Answer**: Among the options provided, the correct definition of hydroponics is "soilless culture or solution culture." This means that hydroponics involves growing plants in a nutrient solution instead of traditional soil.

3. **Explaining the Nutrient Solution**: The nutrient solution used in hydroponics contains all essential nutrients that plants need for growth, such as nitrogen, phosphorus, potassium, calcium, magnesium, and trace elements. This solution provides a controlled environment for optimal plant growth.

4. **Examples of Plants Grown in Hydroponics**: Common plants that are grown using hydroponic methods include tomatoes and seedless cucumbers. These plants thrive in the nutrient solutions provided in hydroponic systems.

5. **Conclusion**: Therefore, the correct answer to the question "Hydroponics is a system of growing plants in" is "soilless culture or solution culture."