Hydroponics 101 Lesson 3

What is the main difference between a passive and active hydroponic system?

• In a passive system, the nutrient solution is not actively pumped to the plants, while in an active system, the nutrient solution is actively circulated to the plants.

• Active systems are more cost-effective than passive systems.

• Passive systems require more maintenance than active systems.

• In a passive system, the plants are submerged in water, while in an active system, the plants are grown in soil.

Name one type of a passive hydroponic system.

• Deep Water Culture

• Aeroponics

• Nutrient Film Technique

• Kratky method

Which hydroponic system involves the use of a nutrient film to deliver nutrients to the plants?

• Ebb and Flow

• Nutrient Film Technique (NFT)

• Aeroponics

• Deep Water Culture (DWC)

What is the benefit of using an aeroponic system in hydroponics?

• Enhanced plant growth through soil contact

• Increased nutrient absorption

• Better oxygenation to the roots

• Reduced water usage

In a drip system, how are nutrients delivered to the plants?

• By spraying the nutrients on the plant stems

• By burying the nutrients in the soil

• Through sprinklers above the plant leaves

• Through tubes and drippers directly to the plant roots

What is the purpose of a deep water culture system in hydroponics?

• To provide a continuous flow of nutrient-rich water directly to the plant roots.

• To limit the access of water to the plant roots

• To increase the pH level of the nutrient solution

• To reduce the oxygen supply to the plant roots

Explain the concept of a wick system in hydroponics.

• The wick system in hydroponics involves using a candle wick to light up the plants

• The wick system in hydroponics relies on wind power to circulate the nutrient solution

• The wick system in hydroponics uses a wick to transport nutrient solution to plant roots through capillary action.

• The wick system in hydroponics requires the plants to be watered manually

What are the advantages of using a ebb and flow system in hydroponics?

• Ebb and flow systems require constant monitoring

• Ebb and flow systems provide better aeration, prevent root rot, allow for easier nutrient distribution, and are cost-effective.

• Ebb and flow systems are prone to clogging issues

• Ebb and flow systems lead to excessive water usage

How does a nutrient film technique (NFT) system work in hydroponics?

• A Nutrient Film Technique (NFT) system works by spraying the plant roots with intermittent bursts of nutrient solution.

• A Nutrient Film Technique (NFT) system works by submerging the plant roots in a stagnant pool of nutrient solution.

• A Nutrient Film Technique (NFT) system works by continuously flowing a thin film of nutrient solution over the plant roots in a shallow channel.

• A Nutrient Film Technique (NFT) system works by suspending the plant roots in mid-air and misting them with nutrient solution.

What are the key components of a nutrient film technique (NFT) system?

• Drip irrigation, timer, float valve

• Sprinkler system, air pump, grow lights

• Channel or gully, submersible pump, reservoir, delivery system, drainpipe

• Ebb and flow tray, air stone, pH meter