Assertion: The technique of growing plants in a nutrient solution is known as hydroponics
Reason: Hydroponics is used for commercial production of vegetables such as tomato, seedless cucumber and lettuce.a. If both assertio and reason are true and reason is the correct explanation of assertion b. if both assertion and reason are true but reason is not the correct explanation of assertion c. if assertion is true but reason is false d. if both assertion and reason are false

Here are the step-by-step solutions for the soilless production of plants using hydroponics: 1. Prepare small tanks of concrete or metal with an upper covering that has supports for plants. 2. Fill the narrow tanks with nutrient solution. 3. Use a pump to circulate air as well as nutrient solution in the tanks. 4. Place the plants in the tanks so that their roots are regularly provided with aerated nutrient solution. 5. Monitor the nutrient solution and adjust the pH and nutrient levels as necessary. 6. Harvest the plants when they are ready. Hydroponics is useful in areas with thin, infertile, and dry soils, and can be used to grow out-of-season vegetables like tomatoes, seedless cucumbers, lettuce, and flowers.