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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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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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.