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ABA plays an important role in seed deve...

ABA plays an important role in seed development, maturation and dormancy.

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Read the given statements and identify the plant hormones X,Y and Z. (i) Hormone Y induces flowering in mango and also promotes rapid internode/petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot to remain above water. (ii) Hormone X promotes root growth and root hair formation. (iii) Hormone Z inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.

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[Aj: ABA plays an important role in plants during water stress and drought conditions. [R]: Exogenously applied ABA promotes stomatal closing.

ALLEN-PLANT GROWTH AND DEVELOPMENT-True and False
  1. The leaves, flowers and fruits of the same tree not only have limited ...

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  2. Development of a mature plant a zygote (ferilized egg) follow a precis...

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  3. Read the following statements and find out the INCORRECT statement. ...

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  4. Choose the correct or incorrect statement regarding given figure: ...

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  5. Water provides the medium for enzymatic activites needed for growth wh...

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  6. Assertion : Nutrients are required by plants for the synthesis of prot...

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  7. Auxin (IAA) was first isolated from

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  8. Spraying juvenile conifers with GA hastens the maturity period thus le...

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  9. Kinetin occur naturally in plants.

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  10. Natural cyitokinins are sytnhesised in regions where rapid cell diviso...

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  11. Ethylene is used to initiate flowering and for synchorinising fruit se...

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  12. Ethephon hastens fruit ripening in tomatoes and apples and accelerates...

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  13. ABA plays an important role in seed development, maturation and dorman...

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  14. Events like vernalization, flowering dormancy, seed germination and pl...

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  15. In certain plants relative duration of light and dark period plays a i...

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  16. Assertion : Vernalisation is the promotion of flowering by a period of...

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  17. Some varieties of wheat are known as spring wheat while others are cal...

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  18. Bennials are monocarpic plants that normally flower and die in the sec...

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  19. Effect of vernalisation can not be seen in sugarbeet, cabbages and car...

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  20. Winter varieties of annual plants are planted in autumn, they germinat...

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