Tag: mineral nutrition in plants

Quizzes (11) Questions (106)

Questions Related to mineral nutrition in plants

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

Choose the correct answer from the alternatives given.
In plants a common symptom caused by deficiencies of Ca, K, Mg and P is the:

  1. appearance of a dead necrotic area

  2. poor development of vasculature

  3. bending of the leaf tip

  4. formation of carotenes in plenty
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deficiency symptoms of Ca, K, Mg and P appear initially as localized tissue necrosis leading to stunted plant growth, necrotic leaf margins on young leaves or curling of the leaves, and eventual death of terminal buds and root tips.

So the correct answer is "appearance of a dead necrotic area".

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

The inorganic essential elements which are obtained from the soil are called as 

  1. Mineral elements

  2. Non-mineral elements

  3. Non- essential elements

  4. Both (b) and (c)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Essential elements that plants absorb from the soil in inorganic form are classified as mineral elements. Non-mineral elements like carbon, hydrogen, and oxygen are typically obtained from air and water.

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

The character of an ecosystem is determined by the environmental factor, which is shortest in supply, this is called as

  1. Law of minimum

  2. Law of diminishing returns

  3. Law of limiting factors

  4. Law of supply and demand
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Law of minimum is popularly known as Leibig's law of minimum. 

According to this law the growth is controlled not by the total amount of resources available, but by the scarcest resource (called as limiting factor). 
It has wide ranging applications and one application is ecology. In ecological studies the character of an ecosystem is determined by the environmental factor, which is shortest in supply. For example, type of forest will be decided not by light or soil but by water availability. If water is present in less amount, no matter how abundant is the supply of other resources, only thorny or scrub forests will develop.

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

The Hydroponics is most closely related to which among the following?

  1. Grafting of Plants

  2. Water conservation

  3. Study of Vegetable

  4. Soilless culture of Plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydroponics is a method of growing plants without soil, using mineral nutrient solutions in a water solvent. It is the definition of soilless culture.

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

Regarding the mineral nutrition of plants, which one of the following statements is correct?

  1. The availability of iron to plants decrease with the increase of acidity of the soil
  2. The presence of $CO _2$ dissolved in the soil water reduces the solubility of carbonates of lime in it

  3. Molybdenum is a constituent of nitrate reductase system

  4. Sulphur is a constituent of phenylalanine
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

Which one of the following is popularly associated with the name of Justus Liebig?

  1. Law of the Minimum

  2. Law of Tolerance

  3. Ecological Niche

  4. Speciation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Justus von Liebig is famous for formulating the Law of the Minimum, which states that plant growth is dictated not by total resources available, but by the scarcest resource.

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

Which one of the following statements correctly fines the term hydroponics?

  1. Growing plants in soil less culture

  2. Culture of fishes by varying the water supply

  3. Growing planktons on the surface of water

  4. Growing plants in sterilized soil
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydroponics is defined as the technique of growing plants in nutrient-rich water solutions without the use of soil as a growth medium.

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

Match List-I(mode of nutrition in bacteria) with List-II(examples of bacteria) and select the correct answer.

List-I List-II
a. Photoautotroph $1$. Escherichia coli
b. Chemoautotroph $2$. Rhodospirillum rubrum
c. Photocheterotroph $3$. Chlorobium sp.
d. Chemoheterotroph $4$. Nitrosomonas sp.
  1. A-$4$, B-$3$, C-$2$, D-$1$
  2. A-$3$, B-$4$, C-$1$, D-$2$
  3. A-$3$, B-$4$, C-$2$, D-$1$
  4. A-$4$, B-$3$, C-$1$, D-$2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photoautotrophs like Chlorobium use light (3), Chemoautotrophs like Nitrosomonas use chemical energy (4), Photoheterotrophs like Rhodospirillum use light and organic compounds (2), and Chemoheterotrophs like E. coli use organic compounds (1).