Nurrient which is essential for the opening of stomata is

1.  potassium

2.  nitrogen

3.  copper

4.  iron

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4
Correct Answer :

potassium


Explanation :
No Explanation available for this question

An element that plays important role in increasing hardness and helping the maintenance of turgidity of cell is

1.  horon

2.  chlorine

3.  potassium

4.  molybdenum

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4
Correct Answer :

potassium


Explanation :
No Explanation available for this question

Phosphorus deficiency in plants

1.  decreases apical dominance

2.  bring healthy root growth

3.  bring retardation of protein formation

4.  All of the above

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4
Correct Answer :

bring retardation of protein formation


Explanation :
No Explanation available for this question

Exanthema in citrus is caused due to the deficiency of

1.  Cu

2.  Zn

3.  Fe

4.  Mn

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4
Correct Answer :

Cu


Explanation :
No Explanation available for this question

Attractive colour of apples may be induced by reducing the supply of

1.  Ca

2.  N

3.  K

4.  B

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4
Correct Answer :

N


Explanation :
No Explanation available for this question

Which of the following scientists used the nutrients culture solution in hydroponic culture

1.  Sachs

2.  Webster

3.  Wallace

4.  Knop

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4
Correct Answer :

Sachs


Explanation :
No Explanation available for this question

Essentiality of nitrogen was established by

1.  Knop

2.  Sachs

3.  Hoagland

4.  Gerick

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4
Correct Answer :

Sachs


Explanation :
No Explanation available for this question

Absorbed minerals are transported to other parts of the plant by

1.  diffusion

2.  imbibitions

3.  ion exchange

4.  water stream

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4
Correct Answer :

water stream


Explanation :
No Explanation available for this question

Aeroponics is also called as

1.  soilless cultivation of plants

2.  parthenocarpy

3.  vivipary

4.  phytotron

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4
Correct Answer :

soilless cultivation of plants


Explanation :
No Explanation available for this question

Which of the following is a macronutrient

1.  Ca

2.  Mo

3.  Mn

4.  Zn

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4
Correct Answer :

Ca


Explanation :
No Explanation available for this question
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