DENDROLOGY

Detailed explanation-1: -The term thermotropism was first coined by Philippe van Tieghem of the Muséum d’Histoire Naturelle in Paris (Van Tieghem, 1884). He noted that subjection of a plant to unilateral temperature cues results in faster growth on the side facing an optimum temperature, leading to curvature of the stem.

Detailed explanation-2: -Thermotropism or thermotropic movement is the movement of an organism or a part of an organism in response to heat or changes from the environment’s temperature. A common example is the curling of Rhododendron leaves in response to cold temperatures.

Detailed explanation-3: -In particular, temperature is a critical factor affecting plant growth. Each plant species has a suitable temperature range. Within this range, higher temperatures generally promote shoot growth, including leaf expansion and stem elongation and thickening. However, temperatures above the optimal range suppress growth.