Tag: mineral nutrition in plants

Questions Related to mineral nutrition in plants

You observed that a plant's younger leaves, not the older ones, are yellowing. You recall that the cause of plant sickness can be diagnosed by which leaves are yellowing.
What is the most likely cause of your plant's blight?

botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

  1. Too much shade

  2. Lack of nitrogen-fixing Rhizobium bacteria

  3. A deficiency in a mobile mineral nutrient.

  4. A deficiency in a non-mobile mineral nutrient.

Show answer
Correct Option: D
Explanation:

If there is a deficiency of mobile nutrients, the symptoms are first seen in the leaves. Mobile and immobile nutrients refer to the transportability of these (K), (Mg), (Cl), (Zn) and (Mo).

So, the correct option is 'A deficiency in a non-mobile mineral nutrient'.

Buds that produced lateral branches develop at

botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

  1. Internodes

  2. Apical meristems

  3. Auxillary meristems

  4. Nodes

Show answer
Correct Option: D

Buds typically occur at

botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

  1. Leaf bases

  2. Leaf axils

  3. Tips of stems and roots

  4. Tips of branches and leaf bases

Show answer
Correct Option: D

Hydroponics are 

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

  1. Growing of aquatic plants

  2. Growing of floating aquatic plants

  3. Growing of plant in sand

  4. Growing of plants in aqueous balanced nutrient

Show answer
Correct Option: A

Hydroponics is growing plants

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

  1. Without soil

  2. Without organic matter

  3. In water

  4. All the above

Show answer
Correct Option: D
Explanation:

Culturing of plants in soil less medium is called hydroponics. Plants are raised in small tanks filled with a solution containing appropriate quantities of all mineral elements. The solution is changed from time to time. It has a mechanism for aeration and circulation. Iron is added as Fe-EDTA otherwise it gets precipitated. EDTA is a chelating agent which keeps the metal ion in the soluble state. There is no need of organic matter. Hydroponics is useful in areas having thin, infertile and dry soils. Through this technique out of season fruits and vegetables can also be grown. 

Thus the correct option is D.

The term hydroponic was coined by

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

  1. Sachs

  2. Gericke

  3. Pristely

  4. None of the above

Show answer
Correct Option: B
Explanation:

The term hydroponics was coined by William Frederick Gericke.

Priestly is famous for discovering gases.
Sachs discovered the Tay Sachs disease.
So the correct answer is 'Gericke'.

Advantages of hydroponic cultures are that

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

  1. Plants can be grown with controlled nutrients

  2. Natural calamities such as floods and drought can be avoided

  3. Pest problems can be kept controlled

  4. All of the above

Show answer
Correct Option: D
Explanation:

Hydroponics is the art of growing plants in absence of soil in a nutrient medium of defined concentration. It was initiated by Von Sachs. The technique is useful because plants can be grown in a defined medium. Pests can be avoided and plants can be protected from floods and drought etc. Also plants can be protected from various soil and water pollutants. In future, when pressure on land increases due to population growth, hydroponics will emerge as highly useful technique.

Hydroponics is growing plants in

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

  1. Water

  2. Soil culture

  3. Solution of mineral nutrients

  4. Tissue culture medium

Show answer
Correct Option: C
Explanation:
  • In 1860, Julius von Sachs, a prominent German botanist, demonstrated, for the first time, that plants could be grown to maturity in a defined nutrient solution in the complete absence of soil. This technique of growing plants in a nutrient solution is known as hydroponics.
  • Hence Hydroponics is growing plants in a solution of mineral nutrients.
  • So, the correct answer is 'Solution of mineral nutrients'.

The disadvantage of hydroponic method is that it is

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

  1. Requires large quantity of water.

  2. Time consuming.

  3. Expensive.

  4. Harmful to plants.

Show answer
Correct Option: C
Explanation:

Hydroponics requires less water than irrigation on agricultural lands.

It is a quicker and a safer as well as productive method.
The disadvantage is that it is an expensive project which requires proper conditions and large investment.
So the correct answer 'Expensive'.

Hydroponic is a technique of growing

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

  1. Submerged plants

  2. Free floating aquatic plants

  3. Terrestrial plants in sand

  4. Terrestrial plants in water containing nutrients

Show answer
Correct Option: D
Explanation:

Hydroponics is a technique of growing terrestrial plants.

It uses a nutrient solution called Hoagland solution.
A growing medium is used along with a thin layer of nutrient solution.
So the correct answer is 'Terrestrial plants in water containing nutrients'.