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Which among the following is a long day ...

Which among the following is a long day plant ? Why is it so called ?
Sugar beet, Sugar cane, Tomato

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Suger beet flowers under long day conditions. It is so called because it needs more light than critical day length i.e. more than 14 hours in this case.
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MODERN PUBLICATION-PLANT GROWTH AND DEVELOPMENT-REVISION EXERCISES (Short Answer Questions )
  1. Would you expect soyabean plants to flower if given a daily light expo...

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  2. How does abscisic acid act antagonistically to auxins and gibberellins...

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  3. Which among the following is a long day plant ? Why is it so called ? ...

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  4. Write the full forms of two synthetic auxins NAA and IBA. What for are...

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  5. What induces ethylene formation in plants? Give two different actions ...

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  6. What is the effect of each of the following on germination of seeds: ...

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  7. Differentiate between quiescence and dormancy with reference to seed g...

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  8. What is meant by bioassay ? Name any two bioassays for auxins.

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  9. Name the hormone that acts as an antagonistic to ABA. From which micro...

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  10. What is meant by abscission? Name the phytohormone involved in it.

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  11. List the four ways how the use of auxins may help in obtaining better ...

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  12. Write any four agricultural applications of ethylene.

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  13. Name the only gaseous natural plant hormone.

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  14. What is differentiation?

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  15. Define plasticity

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  16. Which parts of plant produce cytokinins?

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  17. What is sigmoid growth curve ?

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  18. Why ABA is called stress hormone in plants?

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  19. What do you mean by apical dominance? Which hormone controls it?

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  20. Give a brief account of photoperiodism.

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