Which pigment is universally present in all green plants?

Explanation

Chlorophyll a is a pigment found in the chloroplasts of plant cells. It absorbs light energy from the sun, particularly in the blue and red regions of the electromagnetic spectrum, and reflects green light, which is why plants appear green to our eyes. This pigment is essential for photosynthesis, the process by which plants convert sunlight, water, and carbon dioxide into oxygen and glucose. So, chlorophyll a is vital for plants to produce their own food and maintain their green color.