NEET BIOLOGY

Detailed explanation-1: -Plants utilize hydrotropism to bend their roots towards moistened areas of soil in the presence of moisture gradients (Takahashi et al., 2009; Moriwaki et al., 2013). Because roots play an important role in water uptake, hydrotropism may help plants to obtain water efficiently under drought conditions.

Detailed explanation-2: -Hydrotropism (hydro-“water"; tropism “involuntary orientation by an organism, that involves turning or curving as a positive or negative response to a stimulus") is a plant’s growth response in which the direction of growth is determined by a stimulus or gradient in water concentration.

Detailed explanation-3: -The correct option is D hydrotropism. The movement or the growth of a plant in relation to the stimulus of water is called hydrotropic movement and the equivalent response to the stimulus of water is called hydrotropism.

Detailed explanation-4: -Plant roots mediate water uptake from the soil and have developed a number of adaptive traits such as hydrotropism to aid water foraging. Hydrotropism modifies root growth to respond to a water potential gradient in soil and grow towards areas with a higher moisture content.

Detailed explanation-5: -The direction of early root growth is not coincidental and has been defined as hydrotropism, or growth (or movement) of an organ towards water or towards soil with a higher water potential (Takahashi, et al., 1997). In watermelon (Citrulus lanatus (Thunb.) Matsum.