Tag: essential and non-essential mineral elements

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Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Technique of growing plants without soil in nutrient solution is called

  1. Parthenogenesis

  2. Hydroponics

  3. Aquaculture

  4. Tissue culture
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

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

  1. Soil

  2. Air

  3. Solution

  4. Ponds
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

Multiple choice biology mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements

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

  1. Roots

  2. Stem

  3. Leaves

  4. External factors
Reveal answer Fill a bubble to check yourself
A Correct answer
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". 
Multiple choice biology mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements

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
Reveal answer Fill a bubble to check yourself
D Correct answer
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".

Multiple choice biology mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements

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.
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice biology mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements

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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
Multiple choice biology mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements

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.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice biology mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements

Aeroponics is growing plants in

  1. Air

  2. Satellites

  3. Other planets and space

  4. Stands with liquid spray of their roots
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants hydroponics hydroculture

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Potassium (K) and Chloride (Cl) ions are the primary minerals responsible for maintaining the osmotic potential and cation-anion balance within plant cells.

Multiple choice biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants hydroponics hydroculture

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In plant physiology, any mineral ion concentration that reduces the dry weight of tissues by about 10% is defined as the toxic concentration.