What is quiescence ?

It is the condition of a seed when it fails to germinate due to the absence of environmental conditions which are required for growth.
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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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What is efficiency index ?

Efficiency index is the relative growth rate and the measure of ability of the plants to produce new material. It is represented by r in the equation for exponential growth rate. 
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Why seeds sown very deep fail to emerge?

Seeds fail to emerge because they do not get oxygen for respiration which ultimately leads to the death of the seed. 
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What is dormancy ?

Dormancy is a period when growth, development, and activity are temporarily stopped. This minimizes metabolic activity and therefore helps an organism to conserve energy and survive the unfavourable condition.

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