Hydroponics is a modern technique used for growing plants without soil. Instead, the plants are grown in a nutrient-rich solution. This method of growing plants has many advantages, including:
- Increased crop yields
- Improved plant health
- Reduced water usage
- Reduced use of pesticides and herbicides
Hydroponics can be used to grow a variety of plants, including vegetables, fruits, herbs, and flowers. It is a sustainable and efficient way to grow food, and it is becoming increasingly popular as people become more aware of the environmental impact of traditional agriculture.
Option a is the correct answer. Hydroponics is a modern technique used for growing vegetables without soil. The other options are incorrect because they do not describe what hydroponics is. Option b is incorrect because hydroponics can be used to grow a variety of plants, not just fruit trees. Option c is incorrect because hydroponics can be used to grow a variety of plants, not just spices. Option d is incorrect because hydroponics can be used to grow a variety of plants, not just ornamental plants.