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Sarkari MCQs Government Exam Question Bank
Question no. 39893

Optimal seedling growth temperatures in the upper Gangetic plains hover around:

Select your answer for: Optimal seedling growth temperatures in the upper Gangetic plains hover around:
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Answer: C. 20? – 25?C

Explanation

Optimal temperature ranges for seedling development in alluvial agricultural zones like the upper Gangetic plains typically fall between 20°C and 25°C. Young plant seedlings require moderate warmth to activate crucial enzymatic pathways needed for rapid cellular division. Agronomic research confirms that twenty to twenty-five degrees Celsius provides the best thermal environment for initial growth. The upper Gangetic plains represent a fertile agricultural region characterized by extensive alluvial soil deposits. Seedling germination and early vegetative growth rates are highly sensitive to ambient soil and air temperatures. Enzymatic reactions inside plant cells slow down significantly if temperatures drop too low or rise too high.

A temperature range of ten to fifteen degrees Celsius is generally too cold for optimal tropical and subtropical seedling growth. Five to ten degrees Celsius would severely stunt seedling development and slow down vital metabolic processes. Thirty to forty degrees Celsius can cause heat stress, excessive transpiration, and desiccation in young plant seedlings.

Subject
Agriculture
Category
Forestry
Topic
—
Difficulty
medium

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