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Gibberellic acid induces flowering...

Gibberellic acid induces flowering

A

in short day plants under long day conditions

B

in day-neutral plants under dark conditions

C

in come gymnosperimic plants only

D

in long day plants under short day conditions

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The correct Answer is:
D
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Gibberellin acid induce flower

Gibberellic acid induces reversal of dwarfism in genetically dwarf plants.

Assertion : Gibberelins induce flowering in long day plants. Reason : Genetically tall plantbecome dwarf by application of Gibberellin.

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Assertion : Gibberellic acid increases the yield of malt from barley grain. Reason :Gibberellins stimulate the synthesis of amylase, protease and other hydrolytic enzyme for mobilisation of reserve food.

Gibberellic acid has been successfully employed to induce flowering

[A] : Gibberellic acid , when added to isolated aleurone , induce amylase activity [R] : The enzyme amylase converts insoluble starch into soluble sugars

[A]: Gibberellic acid when added to isolated aleurone layer, induces alfa-amylase activity. It acts at gene level. [R]: GA may act at the gene level or just acti- vates the inactive enzyme or interact to re- move enzyme inhibitor.

NCERT FINGERTIPS-TEST PAPER-Test Paper 2
  1. The source of oxygen evolved during photosynthesis is

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  2. An enzyme promotes a chemical reaction by

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  3. Gibberellic acid induces flowering

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  4. Which of the following statements is correct ?

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  5. Consider the following statements regarding gymnosperms (A) In gymno...

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  6. Find out the correct statement.

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  7. Select the correct match {:("(A) Nirosomonas - Nitrite to ...

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  8. In kranz anatomy, the bundle sheath cells have

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  9. Function of leghemoglobin (a red pigment) in root nodules of leguminou...

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  10. The given figure shows the structures of a mitochondrin with its four ...

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  11. Which one out of A-D given below correctly represents the structural f...

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  12. Which of the following is true/false regarding transport of substances...

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  13. Which of the following is a correct match ?

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  14. "" is a couple of layer thick, made of narrow, thin walled and nearly ...

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  15. Name the blood cells, whose reduction in number can cause clotting dis...

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  16. Acetyl CoA is produced from pyruvate by

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  17. Refer to the given figure which shows sectional view of two types of c...

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  18. Eustachian tube connects

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  19. Which one is true about guttation ?

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  20. At which stage, the homologous chromosomes separate due to repulsion, ...

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