Tag: mineral nutrition in plants

Questions Related to mineral nutrition in plants

Match the following essential elements(List I) with their respective roles(List-II) and select the correct answer.

List-I List-II
a. Chlorine $1$. Constituent of plastocyanin
b. Copper $2$. Constituent of nitrate reeducates
c. Molybdenum $3$. Constituent of alcohol dehydrogenate
d. Zinc $4$. Required for $CO _2$ evolution in photosynthesis
$5$. Required for phosphate transfer
biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

  1. A-$4$, B-$1$, C-$3$, D-$2$

  2. A-$1$, B-$2$, C-$5$, D-$3$

  3. A-$1$, B-$4$, C-$5$, D-$2$

  4. A-$4$, B-$1$, C-$2$, D-$3$

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Correct Option: A

When we boil tulsi leaves in water, water acquires a characteristic smell of leaves because

biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

  1. Smell of leaves diffuse in water

  2. Leaves melt in water

  3. Stored wastes in the leaves dissolve in water

  4. Leaves pollute water

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Correct Option: A
Explanation:

Water acquires a characteristic smell because the smell of leaves diffuse in water, tulsi leaves never melt in water or pollute water.

So, the correct option is 'Smell of leaves diffuse in water'.

There is no direct transfer of electron from cyt b to cyt c as

biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

  1. Energy is not available

  2. The two are not nearby

  3. Electrons are transported in pairs

  4. Electrons have no affinity for cytochromes

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Correct Option: B

In most of the plants, a part which is free from infection / diseases is ___________.

biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

  1. Apical bud

  2. flower

  3. root

  4. stem

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Correct Option: A

Choose the correct answer from the alternatives given.
Hydroponics is a technique of growing:

biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

  1. submerged Plants

  2. free-floating aquatic plants

  3. terrestrial plants in sand

  4. plants in aqueous balanced nutrient medium

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Correct Option: D
Explanation:

Hydroponics is a subset of hydroculture, which is a method of growing plants without soil by using mineral nutrient solutions in a water solvent. Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel. So, the correct answer is "plants in the aqueous balanced nutrient medium".

State whether the following statements are true or false.
Transfusion tissue is the substitute of lateral veins as it helps in the conduction of water.

biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

  1. True

  2. False

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Correct Option: A
Explanation:

Answer A: True
Transfusion tissue immediately surrounding at least part of the vascular bundles in the leaves of gymnosperms, e.g. Pinus. Transfusion tissue is composed of tracheids (transfusion tracheids) with conspicuous bordered pits , and parenchyma cells (transfusion parenchyma) containing tannin-like substances and sometimes starch. The main function of the transfusion tissue is believed to be the transport of materials between the vascular bundles and the mesophyll.