Tag: hydroculture

Questions Related to hydroculture

Technique of growing plants without soil in nutrient solution is called

  1. Parthenogenesis

  2. Hydroponics

  3. Aquaculture

  4. Tissue culture


Correct Option: B
Explanation:

Growing plants in a nutrient solution in absence of soil is called hydroponics. This technique was pioneered by Julius Von Sachs. It is also called soilless cultivation.

Mineral requirement is studied through hydroponics which is related to growing plants in

  1. Soil

  2. Air

  3. Solution

  4. Ponds


Correct Option: C
Explanation:

Solution culture is being used for raising flowers and vegetables. This soil- less production of plants is called hydroponics. Plants are raised in small tanks. They are filled up with solution containing appropriate quantities of all mineral elements. The solution is changed from time to time.

So , the correct answer is option C.

In aeroponics, which one of the following absorbs required nutrients to the plant?

  1. Roots

  2. Stem

  3. Leaves

  4. External factors


Correct Option: A
Explanation:
Aeroponics is the process of growing plants in an air or mist environment without the use of soil or an aggregate medium. In aeroponics, growing plants are suspended in a closed or semi-closed environment by spraying the plant's roots with an atomized or sprayed, nutrient-rich water solution. 
So the correct option is "roots". 

Which of the following technique/s of agriculture is gaining significance in developing space foods?

  1. Aeroponics

  2. Hydroponics

  3. Somatic hybridization

  4. Both A and B


Correct Option: D
Explanation:

 A.Aeroponics is growing a plant in air or mist environment.This technique is gaining significance in developing space foods because it do not require soil to grow the plant.

 B.hydroponic is growing plant in nutrient-enriched water without soil. This technique is gaining significance in developing space foods because it do not require soil to grow the plant.
C.Somatic hybridization - Fusion of protoplasts of two different plants.
So the correct option is "both A and B".

The basic principle of aeroponics includes

  1. Growing plants in a suspended or closed environment.

  2. Growing plants by callus culture.

  3. Growing plants in the presence of growth hormones.

  4. None of the above.


Correct Option: A
Explanation:

Aeroponics is a method of growing plants with their roots suspended in the air in a grow chamber. The chamber contains the water-based solutions that is used to promote healthy growth in the plants. Water is pumped from the reservoir into the mirco-jet nozzles which distribute the nutrient solution to the roots at definite intervals. This is an enclosed system i.e. whatever does not get absorbed by the roots falls back down into the solution chamber and gets cycled through again. The microbes on the plant are in an oxygen-rich environment. This allows the microbes time to digest the nutrients and to make them immediately available for the plant’s use. Well-circulating CO2 in the room also enhances growth. Thus the correct answer is option A.

The method of growing plants by using air in absence of soil or any artificial medium?

  1. Aeroponics

  2. Hydroponics

  3. Suspension culture

  4. None of the above


Correct Option: A
Explanation:
Aeroponics is a method of growing plants with their roots suspended in the air in a chamber. Nutrient-rich water is sprayed on the roots of the plants. The microbes on the plant are in an oxygen-rich environment. This allows the microbes time to digest the nutrients and to make them immediately available for the plant’s use. Well-circulating CO$ _2$ in the room also enhances growth. 
Thus the correct answer is option A.

Why is aeroponics considered as an advantageous process?

  1. It can reduce disease transmission.

  2. It has reduced labour steps.

  3. It can be cloned easily.

  4. Both  A and B.


Correct Option: D
Explanation:

Aeroponics is a soilless method of growing plants. It is done in an enclosed or semi-enclosed chamber. Thus disease transmission is reduced. No land area for plant growth is required. Hence it reduces labour step. It is cost effective because the nutrients that are not absorbed by the roots during a spraying session fall back into the reservoir. Thus the correct answer is option D.

Aeroponics is growing plants in

  1. Air

  2. Satellites

  3. Other planets and space

  4. Stands with liquid spray of their roots


Correct Option: D
Explanation:

Aeroponics is the technique of growing plants in air. The roots of the plants hang in air supplied with nutrients and water on a regular basis. 

Here the soil is not required for growing the plant because the fulfillment of the nutrients of the plant is getting done through the regular mist of the nutrients spray.

Minerals which maintain cation-anion balance in cells are 

  1. Cl and K

  2. K and Fe

  3. Cl and Mg

  4. Ca and Mg


Correct Option: A

Mineral ion concentration in tissues that reduces, the dry weight of tissues by about 10% is considered as 

  1. Critical concentration

  2. Toxic concentration

  3. Optimum concentration

  4. Beneficial concentration


Correct Option: B