Answer:

Chlorophyll is the pigment responsible for the green colour of plants.

Explanation:

Chlorophyll is a green pigment present in the chloroplasts of plant cells. It is essential for photosynthesis, the process by which plants harness the energy of sunlight to convert carbon dioxide and water into glucose and oxygen. Chlorophyll absorbs light in the blue and red parts of the spectrum and reflects green light, giving plants their characteristic green colour.

Other pigments that contribute to the colour of plants include:

- Carotenoids: yellow, orange, and red pigments that absorb light in the blue and green parts of the spectrum and reflect longer wavelengths
- Anthocyanins: red, purple, and blue pigments that are produced in response to stress and help protect plants from damage by UV radiation and herbivores

However, chlorophyll is the most abundant pigment in plants and the primary pigment responsible for their green colour.

Conclusion:

The green colour of plants is due to the presence of chlorophyll, a pigment that absorbs blue and red light and reflects green light. Chlorophyll is essential for photosynthesis and is found in the chloroplasts of plant cells.

Plant Green Colour due to ChlorophyllChlorophyll is the pigment that is responsible for the green colour of plants. It is present in the chloroplasts of plant cells and is essential for photosynthesis, the process by which plants convert light energy into chemical energy.Chlorophyll StructureChlorophyll is a complex molecule that consists of a central magnesium ion surrounded by a ring structure called a porphyrin. The porphyrin ring absorbs light energy and transfers it to the magnesium ion, which then uses it to drive photosynthesis.Types of ChlorophyllThere are two types of chlorophyll in plants: chlorophyll a and chlorophyll b. Chlorophyll a is the primary pigment used in photosynthesis and is present in all green plants. Chlorophyll b is an accessory pigment that absorbs light energy and transfers it to chlorophyll a.Other PigmentsIn addition to chlorophyll, plants also contain other pigments that contribute to their colour. For example, carotenoids are orange and yellow pigments that are present in leaves, flowers, and fruits. Anthocyanins are red, purple, and blue pigments that are responsible for the colour of many flowers and fruits.ConclusionIn summary, the green colour of plants is due to the presence of chlorophyll, a pigment that is essential for photosynthesis. Chlorophyll is a complex molecule composed of a central magnesium ion and a porphyrin ring. In addition to chlorophyll, plants also contain other pigments that contribute to their colour, such as carotenoids and anthocyanins.