NEET BIOLOGY

Detailed explanation-1: -When plants lack light, they don’t produce chlorophyll (the green pigment in plants), and plants can turn pale green to yellow to white. Plant stems become “leggy, ” meaning stems become long and thin and appear to be reaching toward the source of light.

Detailed explanation-2: -“Legginess” in seedlings is caused by low light, as plants stretch to reach a light source. Eventually, this will result in weak stems, and the plant will struggle to support itself.

Detailed explanation-3: -One important light response in plants is phototropism, which involves growth toward-or away from-a light source. Positive phototropism is growth towards a light source; negative phototropism is growth away from light.

Detailed explanation-4: -Yellow and white light have the lowest effect on plant growth. Red light impacts plant growth in several ways, including during the blooming and flowering phase. Certain specific red wavelengths will increase the production of a hormone in a plant’s vegetation that prevents the breakdown of chlorophyll.

Detailed explanation-5: -The tall and skinny plant is primarily due to a lack of light supply. Increased light intensity leads to a faster rate of photosynthesis. Along with water and minerals, light is essential for healthy plants because it aids in absorption by chlorophyll.