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Plant Growth and Development

Short Answer Type

31. What do you mean by long day plants?

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32. What is 'bakane'?

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33. What is quiescence ?

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34. Why seeds sown very deep fail to emerge?

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35. What is dormancy ?

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36. List any two inhibitory functions of auxins.

Two inhibitory functions of auxins are

(1) Suppression of development of lateral buds, this is called apical dominance.

(2) Inhibition of abscission of leaves and fruits.

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37. What is efficiency index ?

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38. How will you induce lateral branching in a plant, which normally does not produce them ? Give reason in support of your answer.

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39. In most plants the terminal bud suppresses the development of lateral buds. What is this phenomenon called ? Name the phytohormone that can promote the phenomenon.

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40. Would you expect soyabean plants to flower, if given a daily exposure of 15 hours ? Give reasons

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