Auxins in plants means for

1.  cell elongation

2.  fruit ripening

3.  cell division

4.  inhibition of root growth

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4
Correct Answer :

cell elongation


Explanation :
No Explanation available for this question

Which of the following is correct match for column I and column II Column I Column II A. Xanthium 1.Its flower opens at higher temperature B. Crocus 2.Earlier and higher yield of crop can be obtained by keeping Its seeds at low temperature between 1 to 10oC C. Millet 3.growth regulator can be obtained from one part of it D. Coconut 4.It produces flower, when period of light available is less than critical period 5.It is an example of photonasty 6.It produces flower, when period of light available is more than critical period

1.  4    2    6   1

2.  6    2    3   5

3.  4    1    2   3

4.  4    5    6   1

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4
Correct Answer :

4    1    2   3


Explanation :
No Explanation available for this question

Auxin causes

1.  growth of apical bud

2.  growth of lateral bud

3.  seed dormancy

4.  fall of leaf

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4
Correct Answer :

growth of apical bud


Explanation :
No Explanation available for this question

The hormone present in the liquid endosperm of coconut is

1.  cytokinin

2.  gibberellin

3.  ethylene

4.  auxin

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4
Correct Answer :

cytokinin


Explanation :
No Explanation available for this question

The phytohormone, which induces triple response growth is

1.  IAA

2.  ABA

3.  GA3

4.  C2H4

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4
Correct Answer :

C2H4


Explanation :
No Explanation available for this question

Which one of the following pairs. is not correctly matched

1.  Abscisic acid-stomatal closure

2.  gibberellic acid-Leaf fall

3.  cytokinin -cell division

4.   IAA - Cell wall elongation

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4
Correct Answer :

gibberellic acid-Leaf fall


Explanation :
No Explanation available for this question

Which one of the following is a natural growth inhibitor

1.  NAA

2.  ABA

3.  IAA

4.  GA

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4
Correct Answer :

ABA


Explanation :
No Explanation available for this question

Florigen is produced in the region of

1.  leaves

2.  fruit

3.  root

4.  trunk

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4
Correct Answer :

leaves


Explanation :
No Explanation available for this question

Hydroponics is a system of growing plants in

1.  soil less culture or solution culture

2.  acidic soils

3.  soil less culture with alkaline pH

4.  soil less culture with acidic pH

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4
Correct Answer :

soil less culture or solution culture


Explanation :
No Explanation available for this question

IAA is derived from or which of the following is involved in the synthesis of a plant hormone IAA and vasoconstrides cerotonin

1.  tryptophan

2.  tyrosine

3.  phenylalanine

4.  none of these

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4
Correct Answer :

tryptophan


Explanation :
No Explanation available for this question
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